How To Inflate RV Tires The Easy Way (Hint: Use a Viair 400P-RV )

NOTE: If you want one of these awesome Viair 400P-RV air compressors for your rig, you can find it here on Amazon: amzn.to/2FFRCii
We’ve changed the way we add air to our RV's tires. Before, we used our diesel pusher's on-board air compressor, but this new way applies to any type of RV, so this tip isn’t just for owners of large motorhomes.
If you've seen our previous videos about adding air to high-pressure RV tires, you know that using the on-board compressor isn't as simple as it sounds. Besides the problem of the pressure cycling up and down below our required tire pressures as part of its normal operation, we also try to avoid idling our engine more than absolutely needed. We hate being an annoying neighbor by polluting a campground with diesel exhaust and noise just because our tires happen to need air. Our new solution makes us a better neighbor.
If you've seen very many of our videos, you know that we’re all about finding money-saving ways to solve RV issues, but sometimes a top-of-the-line solution is the best solution, and you get what you pay for.
We discovered Viair, a manufacturer of ruggedized portable compressors, designed to handle more demanding situations, like filling large off-road vehicle tires. We like the fact that they make a model specifically designed for RVers, which got stellar reviews on Amazon, so of course that’s the one we ordered.
FEATURED & RELATED PRODUCTS AVAILABLE ON AMAZON:
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Flexible Cutting Boards: amzn.to/2s5HuO2
Aerospace 303 UV Protectant: amzn.to/2DWqP5c
Accutire Digital Tire Pressure Gauge: amzn.to/2GJ92vY
Infrared Temperature Gun: amzn.to/2FBLCqX
Camco Super Wheel Chocks: amzn.to/2DSNqLF
Utility Blocks - Pack of 4: amzn.to/2GtsAUQ
Utility Blocks - Single: amzn.to/2Gu161u
Double-Seal, Inflate-Through Valve Caps: amzn.to/2FHJwWH
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The piano music is my own performance of Scott Joplin's Maple Leaf Rag from 1899.
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Full-Time RVers since April, 2003, we share DIY (do it yourself) RV maintenance, repair, travel, upgrade and operational tips & tricks.
Many RVers are eager to learn more about using, maintaining and caring for their rigs. We hope our experience can help others go DIY, saving time & money, plus the satisfaction of a job well done.
We're handy RVers, not professional technicians. We're happy with the techniques and products we use, but be sure to confirm that all methods and materials you use are compatible with your equipment and abilities. Regardless of what we recommend, consult a professional if you're unsure about working on your RV. Any task you perform or product you purchase based on any information we provide is strictly at your own risk.
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[@RVgeeks]

If you want one of these awesome Viair 400P-RV air compressors for your rig, you can find it here on Amazon: amzn.to/2FFRCii

[@ziggyhype9075]

RVgeeks where I get just the hose to buy

[@RVgeeks]

On Amazon: amzn.to/2rWkX2V

[@trentgilliam5192]

Wow! Watched your video and purchased it through Amazon. Came in today and I was able to air up my 5th tires fast! Put a huge smile on my face. Having the right equipment makes a ton of difference. Thank you.

[@georgebowman6140]

I just got mine from Amazon and love it. Checking tire pressure and doing something about it now is EASY.

[@cowboyup545]

Just received my Viair putting it to work in a couple of hours. Thanks for this tip.

[@DaleB809]

Now that is something I will buy and use. Great video

[@kellyvtec]

I bought a viair product 3 years ago, love its features and design.

[@jweibeck7805]

We purchased one about a year ago after watching your video. We have been very satisfied with its performance and would recommend it to any RV owner.

[@RVgeeks]

That's great to hear! We still love our Viair!

[@RobFomenko]

Fortunate to have the previous owner leave it with the coach. Great unit. I purchased a Viair 2.5 gal air tank and fittings as well, and was able to use a air stapler to reupholster our jackknife sofa and dash. Works great! I hook it up directly to the house bank.

[@RVwithTito]

Thanks for the great review of the Viair! I've had my 300P for a couple months now. It's a nice and compact unit that stores nicely in my class C. The smaller model I have works fine for my 80 PSI tires. I sure wish I had it on-board when my tire got punctured this summer in Nevada. I ordered it as soon as I got home.

[@RVgeeks]

Nice to hear we're not the only ones who think Viair is a great brand. Sorry to hear about the puncture. Considering some of the out-of-the-way places we've taken our rig, I should say how grateful I am that we've never had a puncture... except that I'm afraid I'll jinx us. ;-)

[@benwatters9240]

Recently purchased one after watching your video. Inflating tires was always a worry until now. Thanks!

[@RVgeeks]

That's great to hear, Ben! We really do love our Viair. :)

[@realredrebel]

Good and useful info as always. Your videos are straight forward and fun to watch. Best of Luck.

[@RVgeeks]

Thanks so much!

[@dsamala123]

We took your recommendation and purchased this viair unit. We love this compressor. . initial purchase was husky brand from a big box hardware store. Salesman said it would be fine but was no way able to get the job done for our RV . thanks for the video review. Keep up the good work. I have viewed many of your vids for answers to my needs.

[@RVgeeks]

Great to hear, David! Thanks so much. :)

[@stevegardiol6973]

After watching your video a few months back, sure wished we'd had gotten one of these back then, before experiencing the tire nightmares we've encountered the past couple of times out. Called Good Sam for someone to come out for air and they actually asked if we could wait till the following day. We're self sufficient now, with the 400P-RV. She'll get her 1st run tomorrow. Thanks for another great review and video.

[@RVgeeks]

Sorry to hear, Steve. Hope you love your Viair as much as we do.

[@susansost8034]

I have learned so much from you two! Thank you!!!

[@twobee10001]

We own the Viar and i concur. It is an excellent product. Delivers as advertised! It a pleasure to feel the heft of this in you hand, and the quality of workmanship that went into it. What a pleasure to be able to fill up you air pressure while simply idling your engine. Love the convenience of it, stowed on board and at the ready. :-)

[@RVgeeks]

I know exactly what you mean! There's something so satisfying about the heft of a well-made piece of equipment... so manly! lol

[@robinengland5799]

Thank you for showing this product, I have been looking for a quality compressor for the road!

[@RVgeeks]

We love our Viair, Robin! Makes us happy every time we use it, LOL!

[@xeiong10]

I was so impressed with your review, that I bought one for my 30' Winnebago BRAVE. You may only use it w few time a year but its money well spent.

[@RVgeeks]

Great to hear! We still love our Viair! 😊

[@michaelturnage3432]

Mine came in Saturday! Thanks for the tip!

[@RVgeeks]

Enjoy Michael! We know you'll love it as much as we do.

[@Jamminalong]

Great info thanks for sharing! We've also added one to our unit and to have handy around the S&B. A definite must have tool for when we full-time in a couple years. Cheers! ~M

[@akllera]

Mine arrived today. Thanks for the great recommendation.

[@RVgeeks]

You’re going to love it, Andrew!

[@StudioDaVeed]

Been looking for something like this; thank you!

[@772ark]

Ordered one a few weeks ago, my RV just been sitting for 6 weeks and the tires were a little low. Thank you for telling people about this one, it was fast and easy to use. I've only owned my RV for 4 months and was a little worried about the tires.

[@RVgeeks]

+Mark Logsdon Excellent! We love our Viair, too.

[@rvdreamin836]

Bought my first motorhome three weeks ago. Couple I purchased from delivered it and told me I should purchase an air compressor. Went to Home Depot and figured everything they sold was way to big or not powerful enough. I should've know to check what RV Geeks had to say!! I'm ordering my Viair 400p Rv today. Thanks verymuch for the ongoing education. I'm not "as" afraid of this venture with folks like you to learn from.

[@RVgeeks]

william lugg Congratulations on your new RV, William! Best of luck with it, and thanks for your nice comment. :)

[@DenverProphitJr]

Just bought one from your link! Thanks for the tip!

[@RVgeeks]

Awesome! Hope you enjoy it as much as we do!

[@FloridaGirlAdventures]

Great video, great narration and production! awesome tips ans really handy!

[@RVgeeks]

Thanks so much! 😊

[@joehogan6163]

I have relied on many of your videos while preparing for the delivery of our first motor home. IMHO Tire pressure monitoring is another area where the 'typical' automobile driver would not otherwise be prepared to operate a large motorhome. Low tire pressure is an insidious danger that, as we all know, can cause serious damage. Also, that the typical air pressure pump at the local fuel station is not adequate to fill a tire to 80 -100 psi. This can be an unpleasant surprise to folks relying on these pumps. Thank you for providing this and other videos in a light hearted, informative format. I did purchase a VIAIR 400P-RV on Amazon per your recommendation for the new rig.:-) Joe

[@RVgeeks]

Thanks for the great comments, Joe. Safe travels with your new rig! :)

[@smacdiesel]

Thanks for the review, I followed your link and bought one!

[@RVgeeks]

Thanks for using our link. We hope you like your compressor as much as we do! We're getting ready to use it to blow out our water lines, so we'll of course report back on that. ;-)

[@chiukwan5913]

Just ordered it. Thanks!

[@vegasdavetv]

I'm going to get one soon. I will be sure to click your link when I do

[@hitower2652]

Great compressor. I must get one, looks like it works fabulous. Thanks for the info Travel Safe CT-Travels

[@nanamommy4life]

I love You guys Best rv vídeos Ever

[@RVgeeks]

You just made our evening! :)

[@takayama1638]

Oh me, I'm air compressor poor! But now, I need this one too! Thanks.

[@jackcoughlin8943]

Hi Guys! Thanks again for this video. I did buy this unit last week and it does perform just as you say. it is a wonderful product. Thanks for this tip. p.s. I really enjoy all your videos and am a subscriber!

[@RVgeeks]

Jack Coughlin That's awesome Jack! Thanks for letting us know. We still love our compressor, too. :)

[@craigpotter5127]

Another great video from the RVgeeks. When you coming back to Scotland and please bring the mountain aire with you I'd love to see it both inside and out.. Thanks guys

[@RVgeeks]

We LOVED Scotland and will definitely be back, but you'll have to come to North America to see our RV. Shipping costs to the U.K. might be a little too steep. ;-)

[@craigpotter5127]

RVgeeks I feel a holiday coming on guys. Is it cold where you live?

[@RVgeeks]

Craig Potter Being full-timers, we don't have to live where it's cold if we don't want to. ;-)

[@craigpotter5127]

RVgeeks good point

[@catgolfer1]

Perfect video. I ordered one!

[@RVgeeks]

Excellent! You'll love it, David! :)

[@NackDSP]

My Ford chassis manual shows using a remote inflator to be safe. These tires can severely injure you if they fail while being inflated and the chassis manual has a picture showing the zone to avoid being straight out from the tire sidewall for many feet. So connect a long hose and stand to the side of the tire several feet away to be safe. See your chassis manual for tire inflation instructions.

[@athuddriver]

I really enjoy and appreciate your approach to things and am a loyal follower. I do have some reservations about the 400P-RV from a practical standpoint. My "dislike" is the 12V battery clamps as opposed to a 120V plugs. For the most part I think RVs either have external 120V outlets, access to 120V/20 amp shore power or both. The long curly air hoses sometimes are just a pain and I have found it more convenient to move the compressor on a power cord than use of a long air hose. Otherwise, I like the size of the 400P-RV. I do agree that being 12V battery powered can have its advantages but not enough for me to reconsider my current120V portable compressor. I don't think it is a flaw, just not something I think I would like. I also want to make another comment about the configuration in general. I use a portable compressor with a pressure gauge that gives me enough air hose for about 6' of standoff distance from the tire. I can stand to the side and inflate with a chuck that clamps on to the tire valve. It gives me a bit of a safety margin in case something happens while inflating the tire. I like the Power Tank TIG-8330 (powertank.com/products/sfID1/11/listPage/2/productID/367) and other similar designs. I think this kind of configuration has advantages both in safety and for my back minimizing time spent bent over. Even if I were to go with the 400P-RV I would add a 6' hose and chuck after the pressure gauge. Finally, just a tad outside of the scope of your video but related is that I have replaced all of my valve stems with Dually Valve stems. They are solid products that allow all my valves to point outwards for easy access with clip on air chucks. The single piece valve stem for the inner dually eliminates a place for air to leak.

[@RVgeeks]

Thanks for your thoughts, Donald! As full-timers, the compact size is a big plus with the Viair, and while we like regular hoses more than coiled hoses, the compact size and weight of the coil type is nice, and we've had no problem with it tangling. As boondockers, we prefer 12-volt power for those times when we're not in a hook-up RV park, but still like to be as quiet as possible (like in a Nat'l Forest campground for example). When we get a little older, the bending issue might be a bigger factor. ;-) As my mother would say, "That's why they make chocolate and vanilla." LOL

[@johndough9187]

Note that long hoses are far more efficient than long power cords. Also note that most every vehicle has a 12 volt battery to hook the Viair up, so it's not limited to your 120 volt RV.

[@fordfan3179]

Got mine today!

[@RVgeeks]

Excellent! Hope you like it as much as we do. 😀

[@georgepurdy6493]

I know you're repping the compressor but a tip I picked up from of all people a DOT officer doing an inspection when I noticed how he kept his measurements! He took his note pad and made a vertical line then 5 horozinal lines for the axles of the truck and then wrote the measurements of the brake movement on the line there the brake chamber was. OK I confused a lot of you who don't drive anything with air brakes but I took his idea and used it to check all 18 of those tires every morning using his method putting the tire pressure on those lines. I did this when the tires were "cold" and then I had the "list" of tires that needed air and I could hit the air hose on the fuel island OR use my compressor but a lot faster that idling the whole time going from tire to tire checking, airing up, checking and doing it again on each tire wasting fuel and making noise and fumes! If you don't have a compressor or pusher and are in a "6" wheeler "C" this is a nice method to use for your vehicle! Check the pressure and when time to go then pull to the island or air pump and just fill the tires that need air using the list and get out of the way for the next guy. I used my pocket sized note pad and because I kept the pages I also could tell when one of those 18 tires started to have a problem as remembering 18 positions can be a royal PITA but the list helps the memory and is proof for the mechanic that there is a problem. A tip to remember: If you have a tire that is constantly needing a few pounds of air, that tire has a problem and you need to have it checked by a professional. Just adding air can be an invite for Murphy to come in with his law and bite you where you sit! A daily tire check is fantastic, A weekly tire check is pushing it and not just your luck, but the darn RV down the road!

[@RVgeeks]

George Purdy Thanks for all the input George. btw... we don't "rep" for the compressor company. We share information about any and all RV products that we have a great experience with, and we really love our Viair.

[@tomg.8418]

If you don't need 24V you can get the 300P 12v version cheaper. I believe they are the same unit other than the 400P will work on either voltage.

[@sleeper4160]

Love your informative videos. Thanks. I saw your tire covers and wondered why brand/material you would suggest. I'm seeing canvas and vinyl and thought I'd solicit your expert opinion.

[@RVgeeks]

Thanks so much, Junab. Glad our videos have been helpful! We get a lot of questions about our wheel/tire covers, but unfortunately the company that made them (MCD Innovations) stopped making them years agao. We have heard about similar ones made by ShadePro (www.shadepro.net/product/sliders-tire-shades/), but we don't have any experience with them to know how similar they are to what we have now. Ours are made of vinyl, and the ShadePro version appears to be the same. But the price made us swallow hard! (not that our MCDs were cheap when we bought them, either) We do have an inside track on a completely different type of tire cover that's supposed to come out later this year, and we're waiting to learn more as they get closer to market. Of course, if they pan out to be the great product we think they'll be, we'll be sure to feature them in a video... since ours are getting worn out and are going to need to be replaced soon. There are differing schools of thought on material: vinyl blocks 100% of the UV light, which protects your tires from the sun. But it doesn't breathe as much, and can trap moisture which isn't great... so it's best if it isn't in direct contact with the tire. We would think canvas would be a problem since it would tend to get wet and attract/absorb dirt from the tire. Honestly... there's not a 100% perfect solution out there... but covering the tires AT ALL is better than not covering them. Hope this helps... and sorry we can't give you a specific recommendation for a great product that we love.

[@georgemiller6702]

I just bought the RV version and have not been able to put it together. No info on assembly, I have one extra part, and I cannot bet the quick connect to stay connected. Tomorrow I will put my pancake hose on to see if this will help. Looks like a very good idea, I just with I had a parts list and assembly instructions. George Miller

[@RVgeeks]

+George Miller Hi George. You have the exact same model we do. There really isn't much "assembly" required, but rather just screwing in the air filter and attaching the hose(s) and air chuck. It does take a bit of a firm squeeze to get the hoses to clip into place, but other than that, there's really no assembly required.

[@loydmeeks2968]

Great unit, however, be careful as the piston head gets very hot

[@jayf6525]

Sorry I missed the sale. They want $250 for this unit now on Amazon. Let us know if you work another deal! Thanks for the great information and videos.

[@RVgeeks]

Hi Jay! That recent sale was indeed amazing! If we hear about anything like that again, we'll be sure to post on our website again. If you haven't already done so, be sure to subscribe to be alerted: www.thervgeeks.com/subscribe/

[@jayf6525]

I just found this item at VMInnovations.com for $219. Amazon is $244. I called them and they gave me a 10% off one time promo code. Shipping is free. Total cost $197.97. I don't think we'll see a much lower price or at least I didn't want to wait to find out. Thanks again.

[@glennmcohen]

Can you help me change the little light bulbs in the mirrors (mirrors at :29) and how to tighten them down, one is loose where it attaches to the coach.

[@phil6245]

I purchased the VIAIR 400P-RV and I love it. Thanks for the recommendation. I just finished filling my tow vehicle, bikes and RV tires. Easy! Question: what air pressure do you recommend for my RV tires? I'm running 295/80R 22.5 tires with a 120PSI rating. I currently run 110 psi on the front tires and 95 psi rears. How does that sound to you?

[@RVgeeks]

+Phil A Hi Phil! I can't tell you what pressures to run, because it all depends on your rig's weight. You need to have it weighed (ideally corner weights) and then use your tire manufacturer's inflation tables to determine the correct pressures. Here's a video that touches a bit on the subject, although it doesn't specifically show how to read the inflation tables: kzbin.info/www/bejne/jmjWlHt_q8-seM0 Once you know the weight of each corner of the RV (fully loaded with full fuel, fresh water and all gear that you carry, driver, passengers, etc), you can then find the proper pressure for each axle. One note... always use the higher number on both sides. For example, if the weight on your left front tire calls for 110 PSI in the table, and the weight on your right front tire calls for 105 PSI, BOTH must be kept at 110, since the pressure of all tires on the same axle should be the same. Hope this helps!

[@hitmanhank8444]

Here it is 5 years later. Do you still recommend this product or are there things you regret about this product now? Thanks for the great videos too.

[@RVgeeks]

Our Viair compressor is still fantastic! One of the best pieces of RV gear we own.

[@HayabusaRydr]

@0:48 "avoid running engine. We hate being an annoying neighbor. " @2:23 "Be sure to start the engine" Lmao OK.....

[@RVgeeks]

Maybe if you’d stopped laughing your ass off long enough, you might have picked up that we are avoiding running an extremely loud diesel engine in exchange for running an extremely quiet car engine. Huge difference in the campground.

[@bobpadgett8079]

Before using the pump BE SURE TO BUY some 1/4" hose clamps. The supply hoses WILL blow apart where the hose and fittings come together. While the customer service people assured me that this failure is covered under warranty the replacement hoses never arrived (after 7 weeks). So the pump is good but the hoses and customer service is not. Buy the hose clamps so that you won't be caught short when you are in need of air and things blow apart. Same thing happened to a friend of mine after I recommend that he buy the Viare pump

[@RVgeeks]

Hi Bob. Sorry to hear. There must have been a period where a bad batch of hoses were being made. We’ve never had, or heard of, this issue. Hope your replacement hoses have been trouble-free.

[@bobpadgett8079]

RVgeeks My problem is that I never received the replacement hoses. They keep saying that they will be shipped. I ask for a tracking number but get no response. No big deal, the hose clamps work just fine. You are probably right it very well could have been a bad batch of hoses.

[@coreysolender4201]

Have been using the product for a few months now,,,works great. Question I have is the water that runs from the system. Is there some product add on that will function like an air dryer? Is it a big deal?

[@RVgeeks]

Hi Corey! Can you let us know where the water is actually coming from? Is it coming out of the Viair compressor itself? And if so, where? Is it coming out of the air hose?

[@coreysolender4201]

Love your videos! Would there be an issue using one of my chassis batteries instead of house battery?

[@RVgeeks]

Hi Corey! Thanks for the comment. :) We actually did use our chassis batteries, but as long as you're either plugged into shore power or idling your engine, you should be able to use either battery bank. The manufacturer suggests that the extra boost over and above using batteries alone is the way to go.

[@oldnorthsider]

how about check all tire pres. see which ones need air, start your engine for a couple mins. and fill them from your rig ? air pres. to low ? just pump the brakes down ,when the compressor comes on start filling, it will stay on till the tires full.

[@RVgeeks]

Every time you move from tire to tire, the compressor will bring the air system back up to full (which doesn't take very long), which will shut off the compressor again, requiring a helper, or yet another trip back to the driver's seat to pump the brakes to drop the pressure to make it come back up ad race back to the tire to get air in before it shuts off yet again. And still won't work well for tires that need 110-120 PSI, since 120 is where the air system maxes out, which means you're working right at the upper end of its capacity the whole time. We made two videos about this exact topic, and finally got sick of it all and got a Viair. Both of the following videos are now outdated, which is why they link to this one: How To Inflate High Pressure RV Tires: kzbin.info/www/bejne/h3Wyonaha8mHq9E Update: High Pressure RV Tires Inflation: kzbin.info/www/bejne/pGbJfGhqebCKhpI

[@jeffjaekel2558]

First Thanks for all your videos! So well done, interesting , and informative! I am buying a new RV and they are recommending Tryon Bands for tires. I was wondering if you use them, or what your thoughts are regrading them? Thanks Jeff J

[@RVgeeks]

Hi Jeff! Thanks so much for your nice comments. We have heard of Tyron Bands, but have no personal experience with them. A couple of our viewers have mentioned getting them, and liking them, but they have said they are extremely difficult to install and can also make changing a tire more complicated. But they said those compromises were something they were willing to accept for the safety factor that they supposedly provide. We haven't heard anything from anyone who actually had a blowout and was saved by them. We suggest that you check out the iRV2 user forums to see if anyone has more direct first-hand experience with them and can provide more detail. Sorry we're not ore help on this one.

[@jeffjaekel2558]

RVgeeks Thanks guys!

[@chiukwan5913]

I might have placed this question in the wrong place. Could you take a look at the question below? I looked at my batteries which seemed to be connected in parallel but the output cables, both + & -, to the RV came from the same battery which is unlike yours in this video. Is there a way that I could send you a picture of it ? I really would like your expertise on this. Thanks.

[@RVgeeks]

No way to send us a photo here, but not to worry. Regardless of how your batteries are wired, you can simply hook the positive and negative leads from the Viair up to any positive and negative leads on the battery without causing a problem, as long as the batteries are 12 V, which the chassis batteries virtually always are.

[@chiukwan5913]

We are trying to decide between this model and the 450P-RV model. Which do you recommend for a 2007 Monaco class A rv?

[@RVgeeks]

We prefer and recommend the 400 over the 450 because the 400 is higher airflow but lower duty cycle. If we were filling the tires from empty, the ability to run the pump continuously nonstop would likely tilt our thinking more in favor of the 450. But because we are simply topping up air for short periods of time, the ability to complete that top up faster with the 400 is our preference. We’ve never once had any issue with the 33% duty cycle. The bonus is that it’s less expensive too!

[@IDIturboDiesel]

I own a 1994 f350 dually 7.3 diesel. It runs on LT235/85R16 load range E tires. It's tire pressure rating is 80 PSI, so would that compressor do for me?

[@RVgeeks]

Ford6.9/7.3idiDiesel Our tires are larger than yours (295/80R22.5) and require higher pressure (fronts to 110 psi) and this great little compressor has no problem topping up all 8 of them as needed. Should be more than enough to handle your needs.

[@remlapremlap3360]

They should give you one straight hose extension then that kinky hose wouldn't break trying to use it

[@bhbernstein]

I have a Newmar King Aire and the front tires are 365/70/22.5 requiring 125 psi. Will the 400P-RV air compressor work for that? Thanks

[@RVgeeks]

It will indeed, Bram! It can handle up to 150 PSI.

[@lenking920]

I have a cheap knock off of this type of inflator. It worked for topping off my 22" rim tires but couldnt do a flat. Will the 400P-rv do this in a reasonable time without damaging it? The size is most attractive but once burned now I'm cautious.

[@RVgeeks]

+Len King Hi Len! The 400P-RV is primarily designed for topping up high pressure tires, not filling them, as it's rated at 33% duty cycle, so needs to cool between uses. That said, you could probably do it if you let it cool off a couple of times in the process. Or better yet, Viair makes the 450P-RV which is 100% duty cycle and can run continuously for 40 minutes. Here's the link to that one: amzn.to/2t6f8iO These are extremely robust units able to easily handle the high pressures we need in our front tires. Even though not inexpensive, they're so well rated because you really get what you pay for. If you have more than an extremely occasional need for filling a tire that size from empty, you may want to consider a higher volume compressor.

[@zrun4183]

So would you still recommend this product? On a tight budget with getting ALL RV set up... could you recommend something as good just less $$...

[@RVgeeks]

We don't know of any pump that does the job like this one that's as portable. If space is no issue (for example, if you're not planning to full-time) a typical pancake compressor can do the job, too.

[@QLFProductions]

Great compressor, just got an RV, tires are 80psi and so is the tag in the RV. Since I'm not quite ready to shell out the $$$. Can a gas station provide 80psi?

[@RVgeeks]

+QLF Productions Congratulations on your new RV! A regular gas station probably can't do 80 PSI, but a truckstop might.

[@QLFProductions]

+RVgeeks Thanks for the info.

[@macrichardson7440]

Our ClassA Diesel Pusher requires 125 in front tires, watching your video I did not see it actually pump up that high. Were you able to get it up to 122-125 but just did not show it in the video??

[@RVgeeks]

Hi Mac! Wow! 125psi is pretty high! Have you had your coach weighed? Or are you inflating to the sidewall maximum pressure for your tires? We keep our front tires at 110psi (which is what's needed to support the weight on our front axle, based on getting four corner weights done), so we've never inflated to that pressure. But the pump can handle it (150psi max), it may just take longer.

[@Bhamlunker]

my truck tires run I think at 65psi or so, trailer tires (tandem axel, airstream 30 footer) max at 80psi, I run 72 or so....It looks like the 88P unit will do for me, but is there a big functional difference in this model and the 300 or 400 that you are aware of?

[@RVgeeks]

Bhamlunker We think we have this all figured out.....The "RV" designation is used by Viari for its kit that's complete for RVers... long hose to reach all tires from one spot, air gun with gauge, various attachments for different types of wheel arrangements (duals etc), and automatic shut-off. The 300 P lacks all of those features. The 400 P is faster (higher CFM), so good for larger tires, but still lacks all of the above features. You could go one step further up (400P Automatic) to add auto shut-off, but not the other features. We like the 400P-RV because it's 100% complete out of the box, although it is of course more expensive. Personally, the twist-on tire chuck that comes on the 88P was a feature that ruled it out for us. The combination of long reach and proper chuck on the 400P-RV won us over most. We know that other choices may work well for others too, especially if tire pressures are lower than ours.

[@krispedersen2335]

Is battery operation the only option to power this compressor?

[@RVgeeks]

+kris Pedersen Yes. Strictly 12-volt via alligator clips.

[@QLFProductions]

I have a Newmar Dutch Star with 8.3L 350 Diesel. May be similar to your coach. Do you have any oil change videos?

[@RVgeeks]

Sorry we don’t. Dealing with the volume of oil is something we’ve always been loathe to do, so we’ve always left that task to the pros. But we use that opportunity to have professional eyes do a complete inspection on the rig, just in case, something serious is happening that we might miss.

[@QLFProductions]

@@RVgeeks Ok thanks. Mines is 6 gallons so I know what you mean. I'm 80% DIY but I know I'll need to delegate with the large Cummings.

[@anthonysanseverino5127]

How much

[@jwlindem1]

Has anyone purchased the 450P-RV.

[@A2CJ4VR]

I am needing to add air to my suspension on my American Eagle Class A because I don't have an engine to turn on to fill it with air ~ I am sitting stranded, needing possibly a whole new engine ~ I have the 3 valves on the drivers side of the coach that releases air and I intake valve that I saw the tow truck guy use when I was towed. My RV is sinking over the back tire and I need desperately to get things up higher. Do you have an instructional video for doing so? Thank you ~

[@RVgeeks]

+A2CJ4VR Sorry to hear you’re having such a problem, but we think there is a solution that’s not too difficult, even though we don’t have a video about it. That valve that you saw the tow truck driver connect to at the front of your coach is specifically designed for that purpose… allowing a tow truck driver to keep the coach aired up to prevent the parking brakes from locking while it’s being towed. That is the reason every diesel pusher has a fitting like that right up in the front. Although we’ve never done it, we’re pretty confident that if you use an air compressor that’s capable of handling enough air volume, and find the correct male connector to go into it, you can air up your RVs entire air system including the airbags and braking system. Your coach should have come with an air hose designed to plug into that connection point at the front of the rig for the purpose of adding air to your tires. If you look at the fitting on that air hose, that is the same fitting you need to have coming from an air compressor to get the job done. We’re not sure how large a compressor will be required to do the job, but some of that will depend on how long you need to keep the coach aired up. If you just need to air up the system and shut off the compressor, a small one like the Viair may do the job. If you need to keep it aired up for a long time, you may need a larger compressor. Please let us know if you have any other questions about this, and let us know how you make out.

[@A2CJ4VR]

Much appreciated ~ Yes, I was able to purchase the proper nozzles for airing up ~ I found that I had 3 release valves and one of them had about 1/4c. of water that came out. I had called the manufacture and was told that water condenses in the air bags and needs to be released. So no worries there ~ I still have not figured out how to raise my back left side over my rear wheel. Airing up did not raise it as much as I hoped for ~ I also have a lever on my dash just above my air gauge. There are 3 positions, up, middle and down. I remember when I bought it that it has much to do with filling, holding and releasing the air in the air bags. but not sure which is which. Just looking for someone to reassure me what each position actually does. Can not find the information in my manuals or phone calls to manufactures.

[@garymuse4662]

I see there are different models of this compressor with different costs however they all rate up to 150psi and come with the same attachments. What makes the 400P RV better than the rest?

[@RVgeeks]

+Gary Muse The RV model comes with an additional length of hose that reaches every tire on the longest rig. Even at a 33% duty cycle, we've never any problem topping up all our tires.

[@garymuse4662]

Thank you for the speedy response :-) I will do some more research; it seems the difference in cost should constitute more than a length of hose. Your videos are very much appreciated! p.s. I have the same RV....

[@garymuse4662]

The other factor is auto shut off

[@RVgeeks]

+Gary Muse Ah yes. I forgot about that difference. FANTASTIC feature.

[@RVgeeks]

+Gary Muse Thanks Gary. Always great to hear from a fellow Mtn Aire owner. 😊

[@hoots02]

Great videos, Easy how to Instructions and very informative information. My father and I are new to The motor home industry even though we know how to properly maintain travel trailers, A pusher or puller is very different. You got a new sub #chefhoots00

[@starhopper457]

Let me toss something out there... my tag on my trailer says to inflate the tires to a certain pressure. that was for load range D tires. I was able to upgrade the tires to E at the same size. the tire pressure is higher on the tire than the tag attached to the trailer. Do I follow the tire, or the tag? Tag says 65 psi for the D tires, the E tires have max cold of 80 psi, but I put them up to 70psi. How best to approach this?

[@RVgeeks]

David Haviland Hmmmm. Trailer specs are so different than motorhomes, that we don't want to give you an answer that we're not absolutely 100% sure of. We'd suggest that the best thing to do is post this exact question on the iRV2 forums. There are surely lots of knowledgeable RVers there with much more experience and expertise on trailers than we have. Sorry to be pawning you off to another source on this one David, but tires are just too important a topic for us to advise on a question that we're not absolutely sure about. If you visit irv2.com/forums, it's free to sign up and post questions. People there are really eager to help, so hopefully you'll hear back quickly. Please let us know how you make out!

[@eddiemharris9351]

Could you tell me what type of tire stems you bought so I don't have to remove to add air? Thanks for the important information.

[@RVgeeks]

Sure thing Eddie! Here's a link: amzn.to/2acwfrA

[@pbcarney233]

Gator caps are what we use at our service centers on all big rig trucks

[@dmbrew54]

You say you can hook up to chasis batteries if RV is plugged into 30 amp service. Would it be okay to use pump if hooked up to same batteries if RV is plugged into 110 service?

[@RVgeeks]

We’ve done that lots of times and don’t think there’s been any problem at all!

[@dmbrew54]

@@RVgeeks Thanks!

[@thegreatwander]

You've probably already covered this but since I can't easily search the comments... Do you do anything about the water that the compressor is putting into the tires? I've use my Viair twice and each time I've noticed that when I disconnect the hoses, there is a lot of moisture that pops out with the remaining compressed air. Do you use a water trap in the line?

[@RVgeeks]

One of the great things about using this type of unit, as opposed to a pancake compressor, is that there's no tank, which means there's nowhere for moisture to build up and accumulate. In all the years we've been using our Viair, we have never seen a drop of moisture come out of it. We think you should contact Viair directly with your question to see if they have an explanation. Please let us know if you find anything out.

[@thegreatwander]

Part of the difficulty in describing what I experienced is that I have no way to measure the amount of moisture in the air that's coming out of the line. I didn't intend to imply that water is dripping out of the line or tank. While not dripping, there is a noticeable amount of water vapor. I'll plan on having a pane of glass handy the next time I'm at the RV (still preparing to start our travels) and let out 10lbs or so and fill it back up. I should be able to show the condensate on the glass when I disconnect the lines. If you're interested, I'll tag you on the resulting video.

[@RVgeeks]

Thanks. We'd like to see that. We've never heard of ANY moisture coming from the Viair. Are you by any chance in an extremely damp climate, like the Pacific NW, or a very humid climate, like Florida?

[@thegreatwander]

In TX but it may have been chilly at the time. (maybe 54?) I'll pay more attention to that next time

[@chiukwan5913]

My coach has 2 chassis batteries just like in your video. I notice that you attach the positive Viair clamp (red) to the positive node of inner chassis battery and then attach the negative Viair clamp (black) to the negative node of the outer chassis battery. What would happen if I mistakenly attach the positive Viair clamp to the positive node of the outer chassis battery and the negative Viair clamp to the negative node of the inner chassis battery? I don't want damage anything. Please educate me.

[@RVgeeks]

Without seeing the wiring on your batteries, we can't say 100% that it's OK. But it SHOULD be. Connecting to the positive (+) terminal on one battery and the negative (-) terminal on the other just makes sure that you're pulling power from both batteries, and not just one of them. The only problem would be if your batteries were wired in series, not parallel, and then you could be supplying too much voltage to the pump.

[@chiukwan5913]

@@RVgeeks I looked at my batteries which seemed to be connected in parallel but the output cables, both + & -, to the RV came from the same battery which is unlike yours in this video. Is there a way that I could send you a picture of it ? I really would like your expertise on this. Thanks.

[@RVgeeks]

@Chiu Kwan - the way your batteries are wired is perfectly fine, it's just different than ours. Generally, it is preferable to ensure that loads & charging are spread across the batteries (the way ours are wired), but it is really a fairly minor difference... especially for starting batteries, that typically give one large boost to start the engine, then get recharged and don't really have much load on them. No worries... you're fine.

[@sonanraihing903]

Can i use this for 16.9-28 tractor tyre?

[@RVgeeks]

As long as they don't need more than 150 PSI and have a standard valve stem, it should work fine. One note... if you need to fill the tires from empty (as opposed to topping them up) and need to run the pump for a longer period to do that, we'd recommend the 450P-RV instead of the 400P-RV. That's because the 450 has a 100% duty cycle, meaning it can run continuously for longer periods of time (the 400 has only a. 33% duty cycle).

[@michaelgwoods]

What are you thoughts on the Viair P RV 400 vs. the 450? I’ve been shopping and I read the 450 is made for class As. I was considering spending the extra $$$ to get the 450 until I saw your video with the 400. My rig is smaller but has 22.5 tires. Does the 400 work well for you?

[@RVgeeks]

Hi Michael! We absolutely prefer the 400 over the 450. It’s not just because it’s less expensive, but because the 450 has one benefit and one drawback to the 400, and it just so happens that the benefit it has isn’t needed, and the drawback actually affects us. Specifically, the difference is that the 450 has a 100% duty cycle, which means it can run nonstop for extended periods of time, while the 400 only has a 33% duty cycle which means it can’t run continuously for long periods on end. But since we never use it to fill up empty tires, but rather to add a few pounds occasionally as needed, the 100% duty cycle advantage is meaningless to us. It would be much more useful to someone with the need to fill large tires from empty, requiring extended run time on the compressor. The compromise the 450 makes is one that’s actually a downside. And that’s that the flow rate is lower on the 450 than a 400. That means using a 450 would require longer to top up each tire than the 400. So to us paying more to get slower fill times for an advantage we have no use for makes it a no brainer that the 400 is still our compressor of choice. Hope this helps. Safe travels!

[@michaelgwoods]

RVgeeks oh you sold me. If need to fill a tire I’m calling road side assistance. I just need 5 lbs. here and there as I’m on trips. Thanks so much love your channel.

[@FerroequinologistofColorado]

Why not cut off the alligator clips and wire up a plug for the compressor? Or why didn’t you purchase a compressor with a regular plug?

[@RVgeeks]

Since this is a 12-volt compressor, I assume when you say "plug" you're referring to a cigarette lighter plug. The compressor draws too many amps, and would blow the fuse, which is why the manufacturer clearly states that it must be connected directly to the battery, and they do not sell a version that can be plugged in.

[@FerroequinologistofColorado]

RVgeeks oh and I was referring to a cigarette lighter plug

[@yobabybubba]

OK, so I found this video since my comment on your latest video. Do you still recommend this one ?

[@RVgeeks]

We sure do! Used it just a couple of days ago, and still love it!

[@yobabybubba]

@@RVgeeks thank you. I ordered it today.

[@yambor44]

Looking to purchase the one from your link in the description. Are you still recommending this unit? Thank you.

[@RVgeeks]

+yambor44 Still love it as much as ever! We've enjoyed watching the 5-star Amazon reviews pile up too. 😊

[@yambor44]

That seals it! Going to order 3 from your link! Thank you for your reply.

[@RVgeeks]

Well thanks so much! We appreciate the support, and know you'll love the Viair. Safe Travels.

[@yambor44]

Just got the first one in today. Very well made and nice canvas bag with extra pockets to carry stuff.

[@RVgeeks]

They're a bit expensive, but incredibly well made. We love the canvas bag, too! :)

[@sunriseskies3883]

Is there one you could recommend that I could plug in to my house? My RV is out of commission (so DC won’t work) but front tires are low.

[@RVgeeks]

You need something like this for around the house, that can handle high pressures: amzn.to/3guNRjV

[@sunriseskies3883]

@@RVgeeks Thank you for your thoughtfulness to respond!! ❤️ If you ever have time to do a video on the old gas in the tank… sign me up! LOL🤣😉 I just found out today that we should have not let our RV sit for a period without starting it. Our plan is to live in this 2000 Bounder for about one more year… And then we’re trading it in (But at this rate it may not start… or I could possibly ruin the engine if I did try and run it…) I learned that I have to do an extraordinary amount of work if I ever want start it again. 😳😊

[@RVgeeks]

Exercise is just as good for RVs as it is for people! Even when we’re parked for an extended period in one place, we take it out on the road at least once a month. If you ever do get it started, we recommend doing that too. Best of luck with it!

[@sunriseskies3883]

@@RVgeeks Thank you. I see it has a electrical plug… that’s great I can plug it in and air up my RV tires. 👍 I appreciate your time and assistance!

[@benr303]

Can I cut the alligator clips and splice in a male cigarette plug?

[@RVgeeks]

They don't recommend doing that due to the high amp draw of the compressor, which would likely blow the cigarette lighter fuse.

[@mrzif0013]

hi, my viair pump head got so hot it burned my hand. you think this be normal?

[@RVgeeks]

Oh no, mr zif001. Hope it's not too bad of a burn. Viair warns in their owners manual that the pump head can get VERY hot. How hot is probably variable, depending on ambient temperature, how long you've run it without stopping, and how long it had to cool between being run. On a hot day, running it for long periods and not letting it cool in between could get the head QUITE hot.

[@mrzif0013]

well, being a professional cook for many years the burn to my hand was not to bad. but i know now...that s great channel... hey, ever rotate the tires on the coach?

[@RVgeeks]

@@mrzif0013 Since the tires age out long before the tread comes anywhere near even looking worn, we have never rotated tires before.

[@N4ANE]

What tire pressers are you running?

[@RVgeeks]

We run 108 in the fronts and 85 in all 6 rear tires, but be sure not to assume that those pressures are in any way correct for you. The only way to know the correct pressure for your rig is to have it weighed (each corner must be weighed) and then refer to the weight/inflation table for your specific size and model of tire to determine the correct pressure required for the weight that each tire is carrying.

[@N4ANE]

RVgeeks A I dont have a rv of this size myn is a tow behind and and 2 I was just wandering what pressures you were running I work at a place that works on them from time to time with tires we work on big rigs is the main thing we work on we always put 100 psi in every tire unless other wise instructed by the driver or company

[@RVgeeks]

N4ANE No worries! So many people ask us details like that, thinking that they should do whatever we do. Just wanted to be sure that you weren't planning to run another motorhome at 108/85 just because we do! lol

[@N4ANE]

RVgeeks LOL I would love to see someone with a class C running that kind of presser that would be a blow out waiting to happen

[@beacher1903]

Isn't that the exact same pump sold at Harbor Freight for $59? (Item #69285)!

[@RVgeeks]

+Beach er Not even close! The Harbor Freight unit is a toy compared to the Viair. We've tried units like that, and they simply cannot handle the volume and pressure.

[@joegalindo3784]

I purchased the unit. I am however disappointed as the unit only inflates enough pressure to a PSI of 80 far less than the 120 PSI I need. Bummer. Not cheap and specifically for our motor home. But I guess if really low 80 is better than less until you can get to a Truck Stop

[@RVgeeks]

Hi Joe! Something is definitely wrong. We can easily take our tires up to 110 to 120 pounds with no trouble at all. Either you have a defective unit, or something else is going on. We did hear about someone who neglected to remove the plug that goes in the air filter opening prior to using it, and could not get up enough air pressure. If you haven’t already installed the air filter, check to see that that’s in place, as that could cause the problem you’re describing.

[@pedrobastos3218]

Nice video my next gift 🎁

[@MrNastytrucker44]

there is an even easier way to do it without even using this compressor. fleetpride has automatic tire inflators you can order that connect to the rv air system. they are pretty common on big trucks and they keep all your tires where you set them

[@RVgeeks]

+Stevo Reno Pricey, yes, but if you check out the reviews on Amazon, you'll see that most people agree with us that it's a great product for the money.

[@snobak1996]

Lol. On a coach that has air brakes….

[@johnboytoo1]

I tried the viair and they must have changed it since you bought it as it would not do my Jeep tires to 35 psi, much less my rv tires to 115... IN fact, the psi on my rv's tires went DOWN when I used it... returned it to Amazon.

[@RVgeeks]

+johnboytoo1 Must have been a bad unit, John. The 400P-RV is still the same and you can see that 5-star Amazon reviews have continued to pour in. Sorry it didn't work for you.

[@douglasmccowen27]

The way you are inflating your tires is extremely dangerous. Truck tires being inflated to high pressure can explode outward and causes deaths each year when the person is in the blast zone. There are many videos on You Tube showing this danger and how to prevent it.

[@RVgeeks]

We've seen those videos, at truck shops where they're mounting tires. We're slowly topping up with 4 or 5 PSI, not rapidly inflating newly-mounted tires from scratch. Thousands of RVers add a few pounds to their tires every day, and we've never heard of doing that causing a catastrophic failure.

[@DarkLinkAD]

$300...

[@jonnorton9720]

I guess your idea of affordable are two different things at $350.00…

[@RVgeeks]

There are definitely cheaper options out there (many of which we've tried ourselves), but we are extremely happy with our Viair and feel it's well worth the cost, Jon. But as full-timers, we have (1) greater need for regularly topping up our tires and (2) not a lot of space for a compressor. If you're a part-timer, your equation will likely be different. It's why they may chocolate and vanilla flavors... something for everyone.

[@floridablackbear7318]

:)

[@DomVelando]

The combination of the broadcast voice and talking about himself is very weird