How Did They Not Notice This?!

[@jacobpoucher]

So this nissan Rouge the "electronic coupler" simply transmits power to the rear diff, the open rear diff. Nothing can 100% "Lock up the differential" besides a mechanical locker, even a lsd can only transmit about 25% torque to the tire with no traction. This is just a open diff with a magnetic clutch pack. It's fwd biased untill it senses slippage and then it transmits power via the magnetic clutch to the rear diff.

[@stewart8127]

What did they come in for?

[@mrfixitusa6165]

​@@stewart8127oh im thinking they came in for that, but claimed it was something else, so they could then turn around and say "it wasn't like that when I brought it here! what you do to my vehicle!?"

[@clone4211]

Why the hell would they put a brake on the pinion gear when its the relative speed between the driven wheels that is the problem? Even if its an AWD vehicle with two diffs that's a dumb way to go. Smarter would be to modify the existing traction control system to selectively apply the appropriate service brake. And the best way would be to chuck all of the electronic bloat in the garbage and design a smart and efficient hydraulic differential torque balancer that just works using 1920's technology. I wish modern engineers trained on classic cars so that they can realize that you don't need to complicate what should be a simple physics equation of getting from point A to point B using the least amount of energy E. E by the way, includes the human energy required to maintain the vehicle in good repair. No one seems to take that into consideration these days. -Rant over.

[@ChrisColbertIsAJoke-iv8um]

@@clone4211 you sound confused kyle, or slow, maybe both.

[@seth7131]

What year is this? I have a Nissan and the last thing I need is this to happen.

[@davidburks1003]

“Just change my oil. You’re just trying to sale me something I don’t need’

[@JDuBz815]

They've been driving without it, guess they really don't need it 😂

[@slothypunk]

well, technically now your rear diff are gone, you don't need it it is still work as FWD, it is just not AWD anymore LOL

[@DirtyDanTV-mr8op]

My uncles a body shop mechanic and someone came in to get an oil change and after telling him that’s not what they do here, he saw the man’s car had a dent and said he’d be happy to fix that. The man got angry and accused my uncle of deceiving him. Bruh I swear customers are different

[@JDuBz815]

@@slothypunk congrats. You made the same point I did. Feel better?

[@slothypunk]

@@JDuBz815 YAAY, best friends out of nowhere (high five), but just in case you don't know, I am more into commenting to the OP, LOL

[@ondrejjungmann4428]

That's what I call an open diff.

[@kennycrane7050]

aayeee

[@LemonGarageYT]

I hate that this made me laugh

[@robertwest3093]

You beat me to it 😅

[@larrywhinnery1808]

😂

[@Zerokol82]

😂😂😂

[@Henry_Swanson]

He told the customer about the problem, but he was indifferent.

[@kelpking4484]

What do you even mean

[@robertmoffett3486]

indifferential

[@0xsergy]

It's a warranty anyway, that car is brand new. Automatic things lead to automatically expensive failures. A button for 4wd would've worked better IMHO.

[@timhnartiel]

Now he literally has an open diff 😏😅

[@iamsenjey]

Bro thought he was gonna get top comment with this one

[@pitsnipee5]

Just had a similar conversation with the wife. She just failed a state inspection because one tire had a cut in it and was showing threads, and the tires have 40k miles on them, so worn, but not wore out. She asked if we could just replace one as I'm not working (I got laid off at the end of December and have been struggling to find work). I told her because your car is AWD, you replace just one tire, you will replace all three differentials.

[@johnweiland9389]

You only have 2 differentials. But its not cheap. If I where you Id buy 4 tires.

[@MWilk098]

@@johnweiland9389 Depends on the car. Transfer case, front diff, and rear diff.

[@Tzreoaor]

That’s ridiculous. A few mm or more of tread difference doesn’t do anything bad whatsoever

[@BadJellyman100]

​@@johnweiland9389some models of Subaru have a center differential, so that makes three

[@pitsnipee5]

@@Tzreoaor its enough to void a warranty, and after dropping around $40k on it, I'm not doing anything that could cost me extra or void the warranty.

[@chadillacinc]

People often laugh at me or call me crazy when I mention things like this ,they think it's a sales tactic) but I have personally had to change a few rear diffs because of different sized tires.

[@justjamesAMX]

Do people actually drive around with different spec tires on each wheel? Or are we just talking about like uneven wear

[@gilbertpro6750]

Subarus are notorious for this.

[@Kaltsukka]

​@@justjamesAMXI can think of few reasons. Tyre blows out, can't remember or get the same kind of tyre, it's actually too expensive so you go for the cheaper one which is smaller... Not logical, mins you but I think this is what happens usually.

[@justjamesAMX]

@@Kaltsukka that's fair, I've been in similar situations but I always made sure the tires were the same size, maybe not the same amount of wear, but at least the same size

[@NotAlone.43]

​@yamomsballs yea they buy used tires and just take what they can bet because it's like $40

[@overtorque]

Man, I told so many customers, SO MANY FAMILY MEMBERS, to replace all 4 tires on an AWD/4WD or two on the drive axle. The rule of thumb is 2/32 difference is enough to damage and put stress on other components...but what do I know. I'm only a master tech of 20 years LOL keep up the good work, man!

[@vapor-sings]

And you just know that they're gonna come running to you when components fail "I didn't know that could happen!"

[@noneyabusiness1565]

I was is such disbelief when I needed to repair a flat. I knew I was going to have to change all my tire when I bought the car because the tread was low. I wasn't anticipating it for at least a couple months... until I ran over a nail. The nail was too close to the wall of the tire and because my car was AWD, I had to change all 4 tires. The mechanic was really cool about explaining to me the why. After that, I knew I was defeated.

[@Psalm-yg6yi]

100% agreed but by design, it's retarded to have to change more than one tire just for that reason.

[@jonkeau5155]

When I was at Subaru we would order a brand new tire shaved down to the right tread depth to save customers from buying all four, added $25 to the price of the tire. If your relatives drive an all wheel drive and get an unpatchable leak take it to your car dealership and have them order a shaved tire!

[@jonkeau5155]

@@noneyabusiness1565 look up shaved tires, we used to do that at the Subaru dealership 😊 it will save you boatloads of money! We would have a new tire shaved down and shipped in for a $25 extra fee to save them from buying all four

[@JoeHeine]

Damn. Time to go old-school everything. Cars peaked out about 20 years ago

[@davidkeeton6716]

No, about 1974, with the exception of electronic fuel injection. Do we really need computerized hydraulic motor mounts or electric steering. No.

[@lionelpalomares6578]

This was awesome! Very important and useful information.

[@LacrymosaRequiem27]

AWD is such a scam for most drivers who probably only get good use out it it like once or twice a year. Even then, they would usually be fine with FWD and good tires just going a bit slower. Not worth the extra cost, maintenance, and reduced fuel mileage, but everyone still thinks they NEED it.

[@ryurc3033]

Oldsmobile bravada did something similar in the mid 2000s. Put many of them on a toggle switch, so it was 2wd or 4wd with the switch instead of letting the computer do it.

[@1oldskoolluvr]

You're mixing up two different drivetrain systems. The Bravada never had a 4WD option. The 1st & 2nd gen trucks were only sold as AWD. The 3rd gen platform was available in either a RWD or AWD configuration.

[@zeropointzero]

Except their failure was in the transfer case encoder motor. They liked to shred the planetary gears inside.

[@MyCatInABox]

​@@zeropointzerowow!they would eatup the planetarygear set?!😮

[@zeropointzero]

@@MyCatInABox in the encoder motor, aka t-case shift motor. It has like 5 sets of planetary gears stacked in a row. They're designed to constantly adjust the clutch inside the t-case so that 20-30% of the power is at the front wheels. Over time the gears start chipping, jam the motor and then the vehicle hops when turning because the front wheels can't disengage.

[@bryanmontello5702]

How it should be

[@Wiseman189]

I work at a transmission shop I see this type of s*** everyday 😂😂 but it's messed up cuz it's knowledge people need to know

[@GlorifiedGremlin]

Dude is that a hat with a built in headlamp?? Thats cool af

[@theliberaldestroyer3796]

Theyre handy, i have 3 just like it and a necklevel light. Gotta see what we need to see

[@HueMongus101]

I hate to admit this, but I have blown my diff this way.

[@FWAKWAKKA]

we will never let you live this down.

[@jacobpoucher]

You not very smart

[@justinstevenson2061]

Hey come on we all learn somehow…. Hahaha at least some credit due for admitting it and using it as a learning experience. P.s - Shame on you 😂

[@NinjaSushi2]

Don't feel too bad. I bought a vehicle thinking I could fix it up and found out the parts are hard as hell to find.

[@jacobpoucher]

@@NinjaSushi2 stick to playing video games

[@sloc2003]

I love that he showed the two different tire sizes to prove the point

[@TurboA41986]

This the comment I was looking for 😂

[@ivanvarela3215]

​@@TurboA41986like there's so much time in a short

[@KevinMiller-lh9ur]

I didnt see any tire sizes.

[@aqacefan]

@@KevinMiller-lh9ur I think that's the point of @sloc2003's comment... tech said, but didn't show, that there were different tire sizes.

[@Harry_crypto_investor3634]

It happened once with me, I got 2 tires flat on an acident, and I had to drive lile 40km with two replace tires that were completely different from the original, I got home safely but the panel was screaming that my car was sliding and out of control. The next morning I was going to charge the tires for new ones and the hydraulic steer had literally turned itself off to make sure I was going to fix the tires. The steer was super heavy but I managed to get to the place to change the tires. After changed all tires, it got back on automatic.

[@lilmixdboy]

I blew my diff on my Subaru wagon 2 months ago for not dealing with uneven tire wear. You definitely have to have 100% maintenance on tires with AWD.

[@clone4211]

Was it a torsion type limited slip differential or helical?

[@lilmixdboy]

@@clone4211 not sure. It was an 05 wrx

[@buss1205]

how uneven are we talking about here, getting me worried lmao

[@lilmixdboy]

@@buss1205 well I can't post a pic but at its worst before the differential broke, you could see the metal bristles inside my tire on the edge of my driver side tire(worst no-no spot)

[@MrClarkisgod]

Blew up a transfer case in a 2005 grand cherokee. It does basically the same thing as that diff he's talking about. Terrible vehicle.

[@mikel9656]

I was gonna say you are kinda right, 90% of modern AWD systems use open diffs in conjunction with the ABS system to transfer power from one wheel to the other along the same axel... a clutch system is used to transfer torque from the main drive axel to the other. This is usually a FWD arrangement with RWD being a 60/40 split in most cases. This being said not rotating your tires in spec is just as bad as mixing new and old tires. Especially if the difference is front to back. Side to side will result in excess brake usage and warped rotors. Front to back difference can cause the clutch pack explosion that you are showing. So people maintain your cars correctly lol. And listen to your mechanic, chances are they have your best interest in mind. But second opinions aren't bad too.

[@DavidTMSN]

Can you elaborate more on side to side? I have brand new tires on the car - rotated once and my driver side rotor is slightly gouged. I rotated them rears straight to the front and fronts straight to the rear and cross cross.

[@lordjiraiya2068]

Yet another reason why i love my 85 Grand Marquis

[@jaxd9618]

I’ve also got an 85 grand marquis man It’s the best car I’ve ever driver

[@lordjiraiya2068]

@@jaxd9618 mine was a gift from God. Francine only had 42k miles on her and damn cold AC. Now she has 114k miles and no AC (Arizona killed the ac). But she still just floats down the road bro. I couldn't have asked for a better car if i had tried.

[@Excalibur2]

But have you ever driven a Corolla?

[@lordjiraiya2068]

@@Excalibur2 I'm a farm boy. They don't make corallas my size. And even if they did, its not American. Mercury is one of the best car makers left in the country. Even if reganomics made it a bad bussiness decision profit wise to make vehicles here in the us. ALWAYS drive American.

[@Yixdy]

​@@lordjiraiya2068lmao bro "Japanese" companies have been the most American cars since the 90s, my two Chevies were made in Mexico, all 4 of the hondas I've owned, both of my toyotas, and all 5 of my Nissans have been built right here in USA. GM is the worst of the big 3, they sold the American people out. Detroit used to be the richest city on the planet, you know

[@stelleratorsuprise8185]

Complex cars, complex problems ... thank's for the explanation. I knew only a fraction of cars had a 3rd differential, or give you full access for blocking them in heavy terrain, but I didn't knew how modern cars could f--- up this problem so much.

[@Zentao420]

That customer is totally going to try to blame you because they didn't know they had the problem and they took it into for probably a simple oil change or tire rotation and while you were doing what they ask you found this.

[@slapskate]

Well when they see the gaping hole things will start making sense 🤣

[@romanjacobs1794]

Just weld your diff from the get go. Simple as that.

[@Ca18detEnjoyer]

Like always, people underestimate how important tires are

[@nodatesape9124]

My dad. "Ill just out what mazda gave itout of the factory" Cool. $35 cheap shit that slides like a mofo in the rain. Who needs emergency braking, right!?

[@johnwalker7592]

My ex girlfriend always complained when we'd go riding on my motorcycle I'd "add air to my bikes tires" my skinny ass had to remind her on a small vehicle the tire pressures need to be adjusted from 150lbs supported to 300lbs supported..... like bruh the bike only weighs 430lbs itself. Your almost doubling the weight. Wouldn't bat an eye if i was letting air out of my trucks tires after hauling a heavy ass trailer tho....

[@tomsparks2294]

Mechanics need to push axle pairs as repairs more. Do a rotor, no do both, do a caliper, no do both. Do a tire, no do both. Axle pair, people it's been a thing for decades.

[@Stackali]

thats why you always have matching tires left to right if its rwd or fwd. if its awd then all need to match.

[@steveanderson4768]

Also, if you have a vehicle that is all wheel drive, I was told this by a commercial truck service company that services tires and his own vehicle same size tires different brands ended up tearing up the transfer case and transmission because all four tires were not the same diameter they were close, but not the same

[@IparanoiaZ]

I was a service writer after learning a lot from my techs in the shop. Well our best tech left & we had a few guys from another shop coming to help with the work load.. we had a brand new Durango come in & guess what?! AWD all the time.. I was on lunch apparently someone sold her 1 tire.. when she needed 2.. well they didn’t measure the tread. I GOT BACK IN TIME.. CAUGHT THIS MISTAKE! Refunded her the moment I realized what was happening rescheduled her because we needed another tire for the rear so all of her tires can be within 3/30 seconds of tread within eschother so it doesn’t shred the transmission within 500 ft. And I got the other service writer who came in to assist banned from our store for being incompetent!! Almost cost us a damn fortune!! 😤

[@brancampbell]

3/30 seconds? Hahaha.

[@IparanoiaZ]

@@brancampbell you laugh not sure why.. oh okay lemme fix that 3/32” there u go

[@Yixdy]

It shreds the final drive/center diff typically, not the tranny

[@aaroncowan9832]

Bought a truck with a different size spare wheel than the others. Got a flat and went to change it out and while using the spare as a battering ram I set it against the flat tire and realized it was a different size tire on a different size wheel. So be sure to check that before you change a tire.

[@Timinem]

Well I’m a technician over at Rockwell Automation and we have differentials that not only provide inverse reactive current, for use in unilateral phase detractors, but are also capable of automatically synchronizing cardinal grammeters. Now, basically the only new principle involved is that instead of power being generated by the relative motion of conductors and fluxes, it’s produced by the modial interaction of magneto-reluctance and capacitive diractance. The original machine had a base plate of prefabulated amulite, surmounted by a malleable logarithmic casing in such a way that the two spurving bearings were in a direct line with the panametric fan. Our differentials consisted simply of six hydrocoptic marzelvanes, so fitted to the ambifacient lunar waneshaft that sidefumbling is effectively prevented. The main winding is of the normal lotus o-deltoid type placed in panendermic semiboloid slots of the stator, every seventh conductor being connected by a non-reversible tremie pipe to the differential girdlespring on the ‘up’ end of the grammeters. Moreover, whenever fluorescence score motion is required, it may also be employed in conjunction with a drawn reciprocation dingle arm to reduce sinusoidal depleneration.

[@PPeggythePirate]

Dude… what the hell is a dingle arm?

[@GModBMXer]

Thank you. Finally someone with an educated response

[@danielj1063]

Sure you're not jokin?

[@Timinem]

@@PPeggythePirate you gettin lippy with me?

[@robertmoffett3486]

​@@PPeggythePirateIt's similar to a pingle arm, but with a dee instead of a pee

[@johnweiland9389]

So your saying they tried to save $200 or so for tires. And its going to cost a lit more for the repair. Is this car all wheel drive or 4 wheel drive?

[@dirtabd]

Only a daddy’s girl could ignore the warning signs of that destruction that followed. “No check engine light, it probably just the road.” Dont date em, they’ll wreck your engine in many ways then gaslight you on how her choices are always your fault.

[@ghammer9773]

Thank you for explaining what's different between the old diffs that don't care and the new ones that have feelings

[@ivang8655]

It was fine when I brought it in. That must have happened on the Lyft lol

[@Tharkunify]

Love these videos. Great info and no BS. Thanks.

[@randomgooglename]

Guaranteed a tire shop caused that 😂😂😂

[@jaythatguyyouknow5135]

I wish I had this video to use when I was a service writer at a tire shop. Especially when the soccer mom with a Subaru would come in after never rotating her tires.

[@tyvoneharrison9418]

Moral of the story, stay away from electronic cars

[@steveclark..]

I have a 40 year old motorcycle and love it for it's simplicity, sure I have a 2013 pickup truck but I won't get anything newer, that's got a switchable 4 wheel drive, I've hardly used it, I just keep it in rear wheel drive.

[@KJCM2023]

*Thks for your honesty*

[@nothere2a96]

I feel you on that bs. That’s why I offer whatever mechanic that has to do a warranty job on my car $200 cash.

[@MechanicalTriage]

Not on all cars!! We’ve been through this argument before!! Newer ones like this, yes. Ford explorer, yes. The argument comes from all wheel vs 4 wheel drive. And varies by manufacturer. And NO, not all mechanics saying that shit are remotely correct.

[@azazeldeath]

Reminds me of my mate (aussie slang for friend) who done his trade as a mechanic 2 years after me. Little backstory, he worked for his uncle to do his certificate, he ended up getting fired and signed off just so he would leave and not cause more damage in the shop.... yeah not a good start. Anyway years later he decides he wants to take his Ford XR8 ute onto the drag strip, 4 different sized tires, different treads, different types, hell he had a soft racing slick and an economy tire on the back. We warned him, but all I got back was "I'm not an idiot I was a mechanic just because you still are doesn't make me stupid". Well the tractors that prep the surface ran a quicker quarter mile in the end....why? Bang goes the WELDED diff. Yeah he decided lsd diff is too weak so not only did he try kill it with mismatched tires, he decided to make it into basically a ghetto locked diff. Another fun fact about him, he later almost wrote off that ute, his gfs life and his own by trying to get more horsepower from it, he changed the brakes and heard that you lose power to the friction in the brake system....so he smeared molybdenum grease all over the rotor.... Final one I'll share (I have dozens of these about him sadly). Oneday a towtruck shows up at my house, old mate jumps out the passenger side and his evo gets unloaded on my curb. It broke down he states, wants me to help him fix it. I start talking to him and ask what happened. He says it just started making horrible noises and stopped dead whilst doing some work....I ask what work, "oh just porting and polishing of all the internals". I don't know why (as this was his first ever f up I knew about) but I asked "internals? What you mean the intake and heads?" He replies as if I'm stupid "no all of it, heads, intake, coolant lines, oil galleries everything". Later he explains, as I'm still confused and getting more so as time goes on, he used sand blasting sand in everything, it was poured into the oil, into the radiator, the gearbox, the diff, into the clutch and brake reservoir then he started it, and started blowing it into the intake manifold (idk how my brain was shutting down by this point) whilst it was running flat out. He stated that's how the pros do it, they use sand to push through the heads and intake to polish it.... it took hours to show him just how fubar his evo now was. I had to help him basically replace everything, engine, transmission, diff, brakes, brake lines, clutch lines, you name it, if it carried a liquid or contained a liquid it had sand and needed replacing. He later sold the car for scrap metal, why you ask? Well the battery died, so he rewired the entire body and engine loom....with extension cords, when he replaced the battery it caught fire.....

[@ivanvarela3215]

Christ almighty wtf

[@azazeldeath]

@@ivanvarela3215 that is basically what went through my head every time. I still don't know how he even thought any of it was a good idea, when I try think about it, well it just makes my head hurt.

[@ivanvarela3215]

@@azazeldeath somehow dude, my dad was worse than this, but you'd never realize even after knowing him for months. Fellow is like, 85% adult-minded, but the last 15% is like the mind of a child. And that small childish part of him makes all his main decisions. -destroyed 2 of my mom's cars -supports the, uh, other party in the eastern European war (we live in Canada) -dealt with many people who were walking red flags who left him in worst standing than before -hardly made a dime in the last 25 years -openly...uh, would treat others who were different very badly, u know what I mean? -plays games with you to try and establish his authority Ugh......

[@azazeldeath]

@@ivanvarela3215 I sadly know the type. Sorry he is like that. It's kind of scary just how much people like that exist in the world.

[@ivanvarela3215]

@@azazeldeath my dad and his dad also have personalities that were, like, copied and pasted.

[@cliffcox7643]

Vehicles are so complicated now. I love old cars. So simple.

[@andrewquick7667]

This happened today, a awd Cadillac had on three different brands of tires. I work at a tire shop.

[@randombuilds8336]

A lot of newer stuff doesn't have an actual physical limited slip. My frontier advertised LS, but in reality it's the traction control applying a brake to force the open diff to send power to the other wheel.

[@chazwick75]

I've attempted to tell people that for years. It's not just the newer cars but, any car. If there is the potential of power going to a tire, the opposite tire has to be the same size. 4WD and AWD have to have the same on all 4 spots or the transaxle and diff could cause major repair bills.

[@johnelkvillarin8754]

Its my immersion day on automotive this is very helpful

[@MechMan0124]

Nice, that diff comes with an inspection port! Handy...

[@Nick41622]

You just answered the question I had for years.👍

[@ghostyboy9469]

He’s got that new “ram air, open differential” literally

[@rjnga36]

For a split second I thought he was Linus from Linus tech tips😂

[@GreatDrums.]

Laugh's in FWD lol

[@Ichwiebrot]

You don’t need my o-pinion gear

[@kgoingsgoings3331]

Holy shit. Saw that exact same thing with a Nissan murano at my shop. Even down to not being the reason the customer came in 😂. Oil change and check engine light 'its driving normally' (check engine light was a crank sensor

[@zacb7427]

I hate them cars Murano

[@manz7860]

Every year i appreciate my 4.6L and TR3650 transmission a little more. I guess the basic suspension too :p

[@Patrick.Weightman]

My favorite is if you go to any Toyota forum there's always a surprisingly large portion of people claiming it's totally fine to drive with 4.10 in front and 4.30 in rear

[@outkast937]

On this note, make sure your tread is even, and the same left to right, front to back as well if you have AWD or 4x4. Having two different tread patterns, or two different sized tires on one axle will wreck a diff, itll do the same thing if you have two drive axles with different treads or sizes. (Having a brand new tire with an old one is included in "different sizes") you can put a a single brand new tire on safely if it isnt going on the drive axle, so if youre 2wd, its fine to do on your dead axle, but not the live axle

[@muskokamike127]

that applies to even regular diffs w/o the electronic gizmos. If you put different sized tires on that means the diff is constantly in motion counteracting the different rotational speeds.

[@MyCatInABox]

Yes very good point about using different sized tires/wheels

[@michaeldelrossi4487]

Thank You for that Information. I could not get that information from a Mechanic or Service Manager at a Dealership! You buy a Vehicle with 22 inch wheels and you get an 18 inch Spare Wheel and Tire when you buy the Vehicle from the Dealership.

[@FZERO20]

I actually tell normal Subaru owners and other awd ppl that they should always replace all 4 of their tires when they come into the shop. Most of the time, they understand

[@SidneyAgee]

Great videos. Keep going and I will keep watching.

[@edgarpacheco8351]

I was always told it’s bad but no one ever told me why. Thanks for explaining.

[@backwoodstherapy]

This is something that isn't told to a lot of people with cars, is that if you have a donut tire and get a flat on the end of the car with the drive wheels (so, front wheel drive vs rear wheel drive), you're not supposed to just take the flat off and out the donut on because this car will freak out when it senses different wheel speeds and it can ruin your diff or transmission. So if you have a front wheel drive car and get a flat on the front, you're supposed to take one of the good wheels off the _back,_ put the donut on that, then take the good tire and replace the front one with that, essentially changing it twice. Same deal with RWD cars if you get a flat on the rear. With AWD cars (crossovers), most will be front wheel drive until they detect slippage of the front wheels, then they send power to the back, so if you get a flat and have a donut, just follow the procedure for changing a tire on a FWD car.

[@seangannon6081]

“ well I did hear a small clicking noise the other day”

[@i_Nihil_i]

For those of you who dont know, most newer cars are gonna come with a big piece of metal in front of those gears to protect them

[@rfrbz1269]

It amazes me how so many seasoned professionals dont understand how the 'component operation' button on service information works. They just make a guess at how a component functions and their 60% correct assumption pays off in the end anyway

[@NORCAL609]

Watching you makes my engine run hot and overheat. No head-gasket could stand a chance

[@geanny1998]

A few weeks back I told my mechanic that I needed new tires in the front... To then get there and have him change all four and telling me that on quattro you have to change all of them at once because of of the diff. Glad I have common sense. This is my first awd car btw and I didn't know about it. I had to take a hit tho, I have big and wide rims, it hurt my pocket a little more than anticipated.

[@awesomeness7117]

I can tell you now, it's the fact it's a nissian rogue, I have seen countless rogues blow up this exact way even with the right tires on it, or the transmission blows up, I actually seen one where the transmission and rear dif blew up at the same time, the lady went thru a round about, and she said it felt like she hit something and the car wouldn't move anymore, there was nothing in the road that could have caused it

[@HugsBach]

Wow, you're so educational!!! Please teach us more!!!!

[@paulsmith9198]

Gotta love those service windows. Very convenient.

[@ricardomayo8337]

Ive seen (2) trying to slide, but I wont worry because it saved a lotnof outrageous behaviors from “pulling up”!

[@zackstaa7826]

Even more important on AWD. On my Subaru with the AWD I got a nail in the sidewall and they couldn’t repair it. They said I had to replace all 4 tires, couldn’t just replace 2

[@Ian0906]

That’s perfectly fine it’s just a factory breather!

[@adotintheshark4848]

Same thing about awd cars. If a tire fails, it's best to replace them all with identical ones because there will be a wheel mismatch if you only replace the one.

[@jesuschrist711]

only when the tires are different on each side, not each half. remember clients: changes of fours are preferable, but always change in twos at least. back half, front half.

[@calvinthurston1441]

I am a master tech and i approve this message! 👍

[@SeanPat1001]

I think part of the trouble is the “check engine“ light. There’s computers in these cars and most cars now have a display. It would be really nice if the computer would tell the driver what is going on with the car. It’s crazy, but when I was a kid we had better instrumentation than we have now.

[@vladthedude7231]

This mechanic is honest not everyone is

[@charleysgarage]

Great video and awesome explanation!

[@Chevytech1977]

I've been a technician for 20+ years now and if a 4wd or AWD vehicle comes in and it needs tires it needs tires. And they always get called for all 4 tires unless one is fkd and the others will be within 4/32" of the new one. If they only want to do 2 then I kick it. Not being responsible for damage like this ☝🏻because the customer can do all 4 right now. Save your money and buy all 4 at the same time

[@andrewthewelder]

Where did you get that head lamp from looks so nice

[@thenthson]

There is a guy at my work who has ran two doughnut tires out of tread on his subaru. Yes. The first one wore out then he replaced it with another doughnut instead of just putting the right tire on there. We got tires on sale here for 60 bucks and free installation for employees.

[@MistaC1998]

1. Thank you for getting right to the information you had so provide in a concise way. 2. IS THAT A HAT WITH A LIGHT BAR WHERE CAN I GET IT??

[@MrYAMAHA32177]

Never knew they made a led headband light like that, cool now I have to get one.

[@Neggs2000]

I had that exact scenario on a Rogue. Customer took it and never came back for the fix. That car was ROUGH.

[@The_R-n-I_Guy]

There are a lot of things that people are told about cars that I disagree with. But having the same size tires is one I agree with. These new vehicles have too many sensors that get confused when tires aren't the same size. Some are so sensitive if you replace one tire, the exact same size. The computer will sense a difference. You have to change tires in pairs or full sets. Unless you drive old cars like me. They don't care

[@randalln.587]

Aluminum junk. I like the old ford 9" with Detroit locker. And when i broke that. I went to a Dana 70.. lol😂😂😂

[@turismofoegaming8806]

There are a lot of people out there that do not understand what the purpose of the differential is, nor do they understand that it was invented due to the fact that wheels rotate at different intervals based on where they are at in contrast to the trajectory or direction you are traveling in.. so when a curve wheels on the outside turn more wow wheels on the inside or turning less and traveling a shorter distance while the wheels on the outside are traveling a greater distance etc… But of course they would not know that changing the size of the wheels would have an effect on this?!

[@GTI1dasOriginal]

A wheel being "out of spec"... That's a new one. In all 54 years I never ever heard that. 🤣🤣🤣🤣🤣

[@SirDaffyD]

Those space saver spares aren't always the same size as the other tyres & wheels on your car. Best to put the space saver on an unpowered axle, and the tyre you removed from that unpowered axle on where that flat was. That's if the flat was on a powered axle. This is especially important of note with front drive cars.

[@woptimus]

Thumb’s up because ive got the same head lamp lol.

[@GeorgeKennedy-u4r]

I thought it actuated to put power to the rear diff from the transfer case thus giving 4wd, not acting as a limited slip differential which would be internal to the diff. It's a electric operated clutch mechanism.

[@darkstar0000000000]

When your tech says "You need to replace all 4 tires", this is why. Trust me, we don't get paid shit for swapping tires. You aren't doing your tech a favor by buying them, believe it or not we are trying to help you, the customer.

[@Resistculturaldecline]

Theres somebody who is saying, "Naw that BS. My grandad and dad used different size tires on all their vehicle and lawnmower and got 400k miles !".

[@chuckd.68]

My local Discount Tire will refuse to only change one tire on any AWD vehicle for this reason. Thought they were just trying to upsale me until I did my research.

[@JayBlazingProphecy]

Thank you!

[@hyprjay]

I rode around with one side of 275's and the other with 245's for almost 2yrs. Solid 15k miles. Didn't even notice will I got a flat and Walmart wldnt change the tires cause different sizes. (I accidentally put 2 of my Jeep tires on my Tahoe. Both had 18" wheels) lol

[@joeshmoe1436]

I didn't learn about this until i own my second jeep , i had wider tires on the back of my first jeep & it was all wheel all the time , drive it across the country

[@RushWorkingMan]

It wasn’t like that when I brought it in. Your man must have done something to it. 😂