17” vs 18” vs 19” Wheels 0-60 & Weight Comparison E46 330ci

[@OEMplusRESTO]

Since making this video i have tested the effects of wheel weight further The 18” 6.41 is indeed a hero run. It was deemed “invalid” by dragy as well. If you want to see a better picture of wheel weight and its effect on performance take a look at this video where i also test the effects of headers vs worn oe cats kzbin.info/www/bejne/paGqZJiNpsiqfNU

[@amrabdalaziz8422]

Thank u so much - I think 17 is the best specially my car 318 - 4 cylinder

[@BatRadichev]

I've always preferred 17". Currently I run Style 157 from e90 with et35/8J front and back with 235/45 & 255/40 tires. These rims are forged and weigh 8.5 kg. each.

[@OEMplusRESTO]

Thats super light!! nice

[@TOTALdAk1nG]

i really have no clue how i found this channel but this must be the most wholesome most backed up by knowledge yt channel for testing stuff on an e46 ive seen so far your mechanical skill is insane! Keep it up ill def keep watching :D

[@OEMplusRESTO]

Thank you so much! Im working on a video of various bushing types for the front control arms and am saving up for b14’s so please stay tuned and i will make new content. Also have some intakes coming up and rear end ratios.. but thats later down the line lol

[@OEMplusRESTO]

Btw i make “lots” of small errors along the way. Like the time i trusted my hand feeling when i set the pinion preload of my 188k diff only to find out it was too loose and caused a slight whine. From now on i’ll use the proper tool.

[@TOTALdAk1nG]

@@OEMplusRESTO cant wait for more content! :)

[@OEMplusRESTO]

@@TOTALdAk1nG thank u for the support

[@RichardDecollogne]

Great video , thank for your pedagogy... I own E46 320D Touring . Ten years ago I choose 205 55 R16 with 30mm spacers 60mm total . Bilstein B6 with Meyle HD . Racingdiffs LSD conversion Differential . Remap 180HP, 10 years later Hybrid Turbo stage 1 210HP . Looking at your rear axel restoration soon and Seksuspension Lift leveling kits too (snow) . Use that car to go work in ski station every winter days . What is your wheel alignment adjustment tool ?

[@theDrzhivargo]

there is an experiment done where a bmx bike wit smaller wheels accelerated faster than a mountain bike wit bigger wheels but only up til 150 meters, after that the mountain bike had better top end speed

[@Ragequit19933]

Idk I put 19 style 67s on my e46 and it was the worst. I installed max speed coilovers on all 4. Idk if I did something wrong but I’m now selling my 67s and putting my stocks back on

[@Shan2nu]

Would be good to see the rolling acc of these 3 wheels.....say from 40-100mph. I feel the 17" might be the quickest in that.

[@OEMplusRESTO]

Im looking into what i can use to record that data and if i can buy the 19” wheels back for further testing(and better video) What i can say it 17” feels more lively when at speed and mashing the throttle. I had hoped dragy would be more user friendly and kind of let you set a start and a finish and display the results. But it doesnt. Still playing around with it though. Maybe ill improve my dragy skills lol. Thanks for the feedback though. Sorry for the late reply but your reply sent me googling better options than dragy and i didnt reply timely.

[@MrBilards]

Lighter wheels reduce parasitic hp loss, but gearing reduction migt impact 0-100 times negative by lovering shifting points wheare you have to shift before 100km/h

[@OEMplusRESTO]

The diameter of the wheels is in the description. Dont know if its enough to impact the results noticeably though

[@qais..2025]

Thank u for u word . Just great perfect

[@rr40v8]

That was very interesting, thank you. Regarding 0-60 tunes were the rolling radius the same across all wheels/tyre setups as this would affect the gearing and axle drive ratio.

[@OEMplusRESTO]

Hi. Very good question. I just calculated via willtheyfit that the 19" is 647.1mm and 18" is 635.7mm while 17" is 627.8mm

[@OEMplusRESTO]

And thank you for the input. You made me realise theres actually a gearing difference as well. Will add the measurements to the description

[@leored79]

I have the 68s and had the 135s, too. Because of the weight, i didnt put them on the e46, sold them instead. Now i have a set of BBS RC 303 in 18", 8.5, which come in at a shade under 8 kg each, around 1 kg less than the 68s. I have also bought the compound disc brakes for the Front, official BMW, and will save an additional 1.3 kg per wheel at the Front, in total then around 7 kg less compared to a staggered 68 setup. Do you think this weight saving will be noticeable?

[@OEMplusRESTO]

I think you wont be able to measure much difference over the 68’s but it will FEEL alot more lightfootet and responsive. Your new setup is pretty much my dream setup honestly. As light as it can get without getting stupid expensive. Please let me know how they feel and drive when you try them out.

[@leored79]

@@OEMplusRESTO yes, will do. BBS says 225 all round or f.e. 225 245/255. I wanted the conti sport 7, because they are light and have very good reviews, but the only match is one 225 with near identical diameter and circumference, compared to official allowed tyre wheel combinations. Will probably go therefore staggered again with PS4, as there are Lots more options. Replacing the gel battery for a Motorbike liion and removing the CD changer for a bluebus would save an additional 15 kg. Thinking of doing that, too

[@OEMplusRESTO]

Are the conti 7’s better than ps4 or ps5? Im gonna redo my 68’s in oe color and will probably go for ps5’s because they both work AND look good Sounds like a cool project. Do you have any place i can follow the build? instagram perhaps?

[@Bogdangati4]

@@OEMplusRESTO Yes, Conti 7's are better than ps4 and ps5 when new, when they start to get worn the Michelin's are better, but, there is a big BUT, the Michelin's get warm slower than the Conti's and there is huge grip gap between a cold tire and a warm tire...

[@OEMplusRESTO]

Thanks for the insight. I did not know that.

[@MarvinConnell]

The reason the 17s do not perform as well as the 18s has to be due to less traction... Weather because of the smaller diameter(smaller contact patch), lower width(smaller contact patch), different tyre compound, or the extra torque from the smaller wheel diameter causing a lower effective gear ratio leading to excess wheel spin... Even the design of the 17s is better for acceleration & efficiency - compared to the 18s...🤔

[@OEMplusRESTO]

Thanks for the explainer. This video is soo bad though. So next video will be better version of this with 50-110kmh sprints in 3rd gear to show the differencw weight has on wheels:)

[@MarvinConnell]

@@OEMplusRESTO The only thing I have seen in your videos which I would consider as 'bad', are when you hammered your exhaust collector & welded the section under the subframe - BOTH of which introduced added restriction educe performance... I really wish you had tried another way to solve that... O.O ---> =] #IwouldNeverDoThat

[@szantoarnold-istvan1571]

I didn't know 17 inches weigh 10kgs less than 19 inches. I'm in Europe and we usually have 16 inch wheels on cars, and I have those on my E46s too. Would it be worth changing to 17 in means of driveability/handling? Considering rubbers cost a lot more than 16 inch ones.. Thanks in advance for your answer, nice video!

[@OEMplusRESTO]

Hi. Thanks for the comment. The 17” weigh and additional 11kg less than the 18’s but i dont blame you lol, i should get better at making videos

[@OEMplusRESTO]

And big thanks for the questions. I havent tried 16” setup om this car and dont think it will fit over the brakes either. But from past experience i think the best setup is 17” for both comfort and handling, whereas the 18 is more about looks and handling. 19 being just looks. 16 being “just” comfort

[@szantoarnold-istvan1571]

@@OEMplusRESTO Thank you for the fast answer. The video is good as it is, I wasn't trying to be rude or anything! Nice car btw, always love to see a 330Ci

[@OEMplusRESTO]

@@szantoarnold-istvan1571 didnt think of it as a critique either:) next video will be a bit more proffesional and test different shock/strut setups

[@szantoarnold-istvan1571]

@@OEMplusRESTO Nice, looking forward to it!

[@jorgemiranda822]

Hi , i switched the original 17" to 19" and it's a big improvement in my opinion , faster corners and handling .

[@OEMplusRESTO]

Thanks you for letting us know:)

[@nelemilenkovic424]

Please tell me best dimension tyres for 18"? Standard

[@OEMplusRESTO]

Its the tires sizes shown in the video

[@layzy24]

Yes!!!! Thank you!!!!!! Finally someone has done this experiment! I remember having this question saved in my notepad since may of 2021 and couldn't find any videos. I looked today and yours popped up.

[@OEMplusRESTO]

Someone pointed out my shifts were slower. And i need to redo the test with a rolling start 50-100 to get better data. But i can vouch for the car drives magnitudes better on 17 than 19

[@marioturkalj1239]

I have e46 coupe,320ci(m54b22 engine) manual gearbox. Sommer tires 225/45R17(Michelin pilot sport 4) on all 4 wheels, style44 oem alu rims. With tires one wheel weighs 20.2kg.Winter tires 205/55R16 on 4 wheels(Bridgestone Blizzak). They weigh 16.2kg per wheel. Diference in drive is huge. With winter tires and 16 inch steel wheels car is much more agile and responsive. Don't have dragy to mesure diference in acceleration, but I can feel it, car is faster from standstill. Been readind that Porche make some testing about wheel mass. They said that 1kg in rotation is equal as 6kg of load in the car. So..... mass of the wheel is very important for preformance of the car. Lighter the wheel you get better braking(less mass to stop from rotation). Big wheels look great..... but smaller wheels preforme better. Bmw power. 😎💪

[@andrei3720]

Interesting comparison! I have 16 inch both winter and summer and I want to move to 17 inch to make the car more rigid and stabl in corners. I have Michelin primacy 4 205 55 r16 tyres in summer and the car feels like a boat even with Bilstein B4 and eibach new suspension. Thats why i want to go to style 68 to see if its better

[@OEMplusRESTO]

While i havent tried 16” i can with confidence say my 17” with somewhat shitty tires certainly doesnt feel like a boat. But 18” definitely felt more sporty. Just a tad slower

[@andrei3720]

@@OEMplusRESTO thanks man! Im gonna but some style 68s then😁

[@driv3ver]

Hi! You’ve ashed how could you improve the video so here’s my input: - Could have put wheels on a weight and show the results (cheap house weight with 0.1kg precision) - Record few launches and show best of each on all setups. - To be anywhere deterministic you’d have to have same sizes and tires for 0-100. If you can’t afford to make it happen it’s better to show rolling start results where tire grip won’t affect the result. - More to the point, less talking around. - Make your vid’s more informational, I.ex. about benefits of lower unsprung mass in car, how it benefits handling and elongate life of suspension components, benefits of higher side wall of tire, how it helps absorbing so less stress on suspension also more comfortable for the driver and passengers. Slimmer and lighter wheel equal lower fuel consumption. How a bigger radius of mass makes it so cars lose a lot of power just to move something that’s heavy and further from center. Also negatives of slimmer tires (I. ex. less grip on dry, higher braking distances), higher side wall ( I. Ex. worser feedback). Good result overall, liked - just not enough to subscribe yet, keep going ;)

[@OEMplusRESTO]

Great input. I did weigh them on a bath scale and with a fish scale thingy. I just didnt inckude it in the video as i found it hard to hold my camera(iphone) and a wheel while getting any footage worth showing. I now have a gopro i can use but i didnt have that at the time. No excuse though. Just didnt manage go get decent footage out of it Youre right on all accounts and i will keep it in mind for future videos. More to the point. More informational. Better footage etc. Lots of places i can improve.

[@ron8566]

Interesting analysis. One thing - I would do your pulls from 10 kph rather than a dead stop pull. This would likely eliminate a big variable which is the relative stickiness of each type of tire.

[@OEMplusRESTO]

My latest video redoes this video more or less like you describe:)

[@ron8566]

@@OEMplusRESTO Roger that. Thank you! Your end result is what I have always suspected. Larger and heavy wheels may look good but all that extra unsprung weigh is a detriment to performance.

[@ethownzbh]

If you do this video again, roll runs will be far more accurate in showing the speed difference because it eliminates the tire (compound/tread and age) differences that effect traction at launch. Something like a 20-100kph or 20-150kph (if you have the road for it) would make for a much more conclusive comparison.

[@OEMplusRESTO]

Youre right. Since doing this video i have used a 50-110kmh test for the other videos as this was too inaccurate:)

[@cheez-itconnoisseur2222]

Very helpful video. I have an 03 pre-face lift 330ci with the 5 speed manual. It’s on the stock 17s with the same tire setup as you used with the 17s. I love having a bit more sidewall, helps the ride a lot

[@OEMplusRESTO]

Nice input:) They ride really well on 17” imo.

[@OEMplusRESTO]

It really does.. im gonna ditch the 135’s when i have the 68’s restored to oe color Thank you for your input

[@marveliosguevara9988]

Thanks good stuff

[@klassfreudman7359]

BBS CHR 8et40/9et44 -18 ; 10kg per Rim...

[@OEMplusRESTO]

Not bad at all

[@joelsnake8]

Very good video! My 330Ci currently has the style 135 and I was thinking into changing them to a more lightweight wheels even when those are the ones that I find better looking.

[@OEMplusRESTO]

I have a video where i test headers and use both the 17 and 18 setup.. the 17” setup is generally 0.2-0.4seconds faster everwhere. 18” just really suit the car i agree

[@marioshondrov8646]

guys i have standart suspesion 2005 e46 330d RWD touring, would 19 inch bmw style 167 rims,fit without rolling fenders and what do you think about this tire setup, front :235/40/R19 rear : 255/35/R19

[@steve1714]

Your gear changes were a lot better in the 18” wheel run vs the 19” runs. The saw tooth effect in the acceleration graph really slows you down from my experience with dragy runs

[@OEMplusRESTO]

Good to know. Thanks for the insight. I will try and do it over when i get the opportunity

[@trilingualkid]

damn thats a lot of weight shed off...people would strip the car deadner material for 20lbs

[@OEMplusRESTO]

Yeah. Id love to test some super light wheels and fresh tires in the future.

[@doodledo5226]

I have 2006 330ci with style 71 and they are 18"

[@OEMplusRESTO]

How do you like them?

[@doodledo5226]

@@OEMplusRESTO They still look stylish and good on e46

[@OEMplusRESTO]

@doodledo5226 iirc theyre also the lighteste oe 18”that fit

[@doodledo5226]

@@OEMplusRESTO really?

[@brianingle7535]

My guess would be taller side wall with the 17 allowing more sidewall flex

[@OEMplusRESTO]

Even with shitty tires they felt way more responsive

[@brianingle7535]

@juhlsGarage the taller side wall will give a softer ride. During "spirited" cornering, the taller side walls present a higher risk of "rolling under" too

[@OEMplusRESTO]

Youre right. I was just trying to say the weight difference(and perhaps the tiresize and more) makes the 17” feel more lively and .. spirited I appreciate your input :)

[@justynajaworska6999]

You believe if the 19 weights the same as the 18 approximately it would impact so much the acceleration?

[@OEMplusRESTO]

Hi. If weight stays the same it will be the same. Also total diameter will also affect the gearing if it changes

[@ttinnovations3310]

thanks for making the video, sweet, I guess I'll keep my 17" and run the tires bald, maybe go 18" for a better look with some BBS 2 piece

[@OEMplusRESTO]

Thank you. Im happy i could help:) The video doesnt show it that well, but subsequent tests have proved over and over light 17” wheels are faster than 18” wheels, most notably in this video kzbin.info/www/bejne/paGqZJiNpsiqfNUsi=hQslokGXvD1_V8d6

[@elbassaraghii5744]

Data is always appreciated thanks for your work and vids ,, revolutions of the wheel and how much distance it covers are the focus here right , so if you get a light weight 20 or 19 inch wheel in theory less or equal weight to say stock 15 or 17. At a 20 or 19 inch size the larger wheel s will dominate simply because the same amount of power it takes to move the 15 size rims widget is get more more done or distance with a 20 at the same weight , gram lights and specially made wheels it’s custom ,,,,, I’m also into gearing it’s amazing fulcrum effects , amazing evaluations once again thanks for your data 👍🏽🤓 love learning

[@OEMplusRESTO]

Thanks you for watching and your input. It is appreciated. The 18” best run data is invalid though but i have a video that shows better data called before and after headers where effects of wheel sizes is also shown

[@jakejohnson6120]

Great test and analysis!

[@CL9k24a3]

Anything above 8.5kg for wheel is a joke

[@riccardocervetti3203]

Hi juls, I just recently bought an e46. I am noticing that my shifts from 1st to 2nd are sometimes not really good... the car jumps forward a bit... I usually dont have this problem with other cars. Do you shift slowly in the first gears or you never had this problem?

[@OEMplusRESTO]

Hi Riccardo I have never experienced the problem youre describing. I dont shift slowly in this car either. Filling it with aft6 greatly improves the shifting feel and speed versus old oil. The problem youre describing doesnt sound like a gearbox problem though. But maybe more of a clutch problem really. Or a slave cylinder issue perhaps. Issues with the clutch can affect the gearbox as well resulting in sometimes, clunky shifts. But maybe im misunderstanding you. Do you mean that the 1st to 2nd shift sometimes is tricky so when you release the clutch the rpm is too high and the car will jerk foreward as the clutch engages? If so. I have had great luck with liqui molys gear protect and atf6 combined in the getrags 420g

[@riccardocervetti3203]

@@OEMplusRESTO yeah I think is probably due to the high rpm when I release the clutch. If I do it very slowly it can be smooth... I was also thinking about the clutch delay valve... maybe I am accelerating too quickly while the clutch is still disengaging

[@OEMplusRESTO]

Yeah get rid of that cdv even if its not the culprit. But if your rpm’s are too high maybe you have an entirely different problem. Its kindda hard do help diagnosing it without having experienced it or seen a video of it. Maybe you should try and upload a “shorts” video of it and them comment here aftwrwards. Then i will have a better chance of helping you out

[@riccardocervetti3203]

@@OEMplusRESTO thankyou very much juhls! I think what I am feeling is something like this kzbin.info/www/bejne/kH66qKt6dqmGl6s .... it is kinda hard to show on video, is not very evident

[@OEMplusRESTO]

@@riccardocervetti3203 never seen this problem before but im certainly no m54 expert. Try it out and let me know if it helps Im in the middle of a faulty 02 sensor video, and i might end up having to replace the cats!

[@omerkurt9406]

Thanks for the video!

[@OEMplusRESTO]

Thank you for watching

[@oquemar1984]

Mate, nice channel btw. I own the very same car. Really interesting because I installed M3 Style 67 (19 inches). According to RealOEM these rims weighs only 11,8kg & 12,4kg. The weight for Style 68 are 10,15 kg & 10,55kg (Front&rear). My guessing is that weight difference in your measurements are due to incorrect tire size, adding rubber and pressed air where there is no need. Regarding diameter, in Spain is only legal to change rims if you adapt the size of the rubber, so I am running 225/35/19 front & 265/30/19 rear. In this rubber the total diameter is even smaller, gaining less flank & precision through corners. Acceleration I couldnt tell, but for sure I gained traction at corner exits. To be honest, the combination of less height & wider rubber compensates any loss in pure acceleration. Personal opinion, of course.

[@OEMplusRESTO]

Thanks you for the insight. Bigger wheels(more tire) definitely has a place in this world. Im happy you can add that weight isnt the only thing that matters, and that tires can effect performance to an equal og greater extent. What are the laws in your country regarding stuff like exhaust and other mods if i may ask?

[@oquemar1984]

All mods should get an inspection similar to German TUV and some reports. The process is something called “homologation”. You need to get an official report from the fabricator that the part meets BMW Technical regulations, a second report from a mechanical engineer and finally a workshop stamp that the part has been installed correctly. Finally, Spanish TUV inspection. Long and money consuming. There are shortcuts if the fabricator has made it before (Recaro seats I.e.), but generally you need lots of money for it.

[@OEMplusRESTO]

@@oquemar1984 thats the same here. Probably because were brothers from the same mother(EU) lol This also means i will have a video out soon where i return the exhaust back to stock because of the rules you mention. Thank you for the insight. Its fun to hear of others cars and their hurdles as well.

[@giovannilegue2177]

yo what are the rims on the thumbnail of the videothey look perfect for my 46 build

[@OEMplusRESTO]

BBS Replikas. I believe theyre the CH’s

[@layzy24]

Here's another good idea for a video that you can't find the answer to anywhere. Wheel weight of cast aluminum, vs flow formed, vs forged. All the same wheel size, no tires on any of them, and they have to be the same exact model. Or at the very least similar models. I really want to see if there's a weight difference. Maybe do durability test to also test their endurance. 😈. I can already see the whole car community going nuts.

[@OEMplusRESTO]

Thank you. But i dont have that kind of money😅would be cool though

[@layzy24]

@@OEMplusRESTO offer up. That's my goto for everything.

[@lucianoalessandretti8739]

On freeway with one is more fuel economy 19 or 18? Thanks

[@OEMplusRESTO]

I would think the one with the biggest circumference but i didnt test it so cant say for sure

[@bryceresendez5924]

what brand halos did you install inside headlights?

[@OEMplusRESTO]

I sadly dont know as it was the previous owner who installed them. They look good though. Is there any way to tell? Then i’ll find out and report back

[@NormalGuy]

I need to hear you say “Get to the Choppa!”

[@OEMplusRESTO]

🤣

[@hardyschilling644]

The lightest 18 inch OEM Bmw wheels that fit your car are "styling 164". They are only 7.5 inch wide but they look great and are very light (less than 10kg). They are also surprisingly cheap and easy to get.

[@OEMplusRESTO]

Interesting.. thanks for the great tip sir

[@Dmxravin]

actually the lightest wheels would be the Style 46 16 inch or 15 inch. They're forged aluminium.

[@hardyschilling644]

@@Dmxravin that's true, however they won't fit the massive brakes of the 330i. Those require wheels that are at least 17inch tall.

[@hardyschilling644]

Styling 157 wheels (from the E90) are forged, very light and easy to come by. They should fit the e46 330 as they are 17 inch wide. They are not the prettiest though...

[@ammarbahiar]

I really like your informative video , like thisss

[@OEMplusRESTO]

Thank you. More will come. Possibly a better remake of this video as well.

[@BMWarrior1]

fantastic video - what suspension do you have in this car?

[@OEMplusRESTO]

Thank you, At the time of filming i think ap coilovers but i have since installed ad. Reviewed a few different bilsteins

[@BMWarrior1]

@@OEMplusRESTO thanks for the reply 👍 keep up the good work, much love from Australia

[@wot48320]

IMO 17 is the sweet spot for street.

[@OEMplusRESTO]

I cant wait to install some better tires on them nd take them for a ride and compare them to the 18’s as well

[@hjlnbi]

camry 17 inch or 18 which better ?

[@OEMplusRESTO]

Depends on what your goal is

[@hjlnbi]

@@OEMplusRESTO is there a big diffrenet in just 1 inch ? camry SE v4 is 18 inch and camry GLE is 17 . is there a diffrenet in the starting spead ?

[@jacobmosiondz5602]

Nice car, Are those 1 Piece headlight assemblies in there??

[@OEMplusRESTO]

Thank you. I believe they are yes. Havent really spent any time on the headlights yet so i could be wrong. Im in the middle of restoring the underside:)

[@jacobmosiondz5602]

@@OEMplusRESTO Nice. Looks great and thanks for the video! I just picked up some 18's for my E46. Going to compromise some comfort and handling for looks I imagine. Are you still using your 17's on the car?

[@OEMplusRESTO]

@@jacobmosiondz5602 currently its not running at all. But when i get it on the road in a month or so i will prpbably use the 18’s as they have the best tires. But will rebuild the 17’s and buy bew tires later down the road. Imo the 17’s ride the best

[@pickle4034]

Just put less fuel in the car.

[@OEMplusRESTO]

that would help as well lol

[@MrBilards]

@@OEMplusRESTO might not have segnificent diffrent, because fuel is located low, over rear tyres, but might get faster from 80km/h +

[@kostapapag9592]

is smaller always faster ? Thank you

[@OEMplusRESTO]

Thanks for the question. Not always. Im no expert but in hindsight the smaller wheels have a gearing advantage and lighter weight. Just poor tires that cant grip! The 17”/ with good tires and possibly a locking diff would almoat certainly be faster than the 18”

[@kostapapag9592]

@@OEMplusRESTO Thank you and sorry for the really late reply. Here in EU I have a 318i with 118hp from factory. 15' rims, in my head the 17s would be too heavy, thinking of settling for 16s what do you think ? Thanks in advance!

[@OEMplusRESTO]

@@kostapapag9592 id say definitely stick with the 16”.. they will be more comfortable too

[@kostapapag9592]

@@OEMplusRESTOroger that! Thank you!

[@swansmeister]

Weight doesnt make much sense if the wheels arent the same wheels in all sizes. A second faster by going from 19 to 18inch wheels no way, never, maybe 0.1 or 0.2 max but 1 second is hilarious.

[@OEMplusRESTO]

Thanks you for the feedback. Those are the results i got without touching anything else on the car. Im no expert on weight and its effects on performance though.

[@swansmeister]

@@apteka6014 it's unsprung mass omg you not gonna teach me anything trust me, I have oz superlegera's on my car for a reason. Never said it doesnt improve acceleration and steering also btw, I said the diffetence is never gonna be a full second, never, maybe 1/10 at best maybe 2/10 but never a full second.

[@swansmeister]

@@apteka6014 from 19 to 17? You do know the tyres are higher and the wheels with the tyre included is hardly any difference in size, they are a little but its almost neglectable. A second nope never, I will eat my sock if it is even close to that which it aint.

[@llavero5]

@@swansmeister I have a lot data about that, different dynos with big difference in hp, other tests like this published on the internet of different cars and its consistent. 19" usually has the double of moment inertia than 17" In this case it is not just the difference from 19 to 17, but the huge difference of 44kg (97lb). And unsprung mass has nothing to do with acceleration, but with suspension.

[@EpicsodeOne]

Hey buddy, interesting video. A couple of important points: - The 17s are definitely going to give you faster acceleration than both the 18s and 19s. - It's never about the rims, it's always about the tire height, or the total diameter of your wheel, because now you're adding torque, it's like you're slightly altering your differential to a more acceleration-biased one. - When you run your acceleration tests, if you have old tires, your DSC will compromise a lot of your time, that's when the car is periodically cutting off power to limit the spin, that's why you were experiencing 40 and above better acceleration. - We will never know better than what the manufacturer what tire size is best for the car, remember, a car handles better on turns with its original designated height because there's a separate calculation dedicated to how much the car rolls sideways over its tipping point, thus putting down all the downforce for better handling. I have a 2003 e46 320ci that I've swapped for a tuned M54B30 from a 2006 X3 with headers and straight pipes and some other bits and tunes, I now make sub 5 seconds on a good day (Manual transmition) and that's also because I've installed a shorter differential. The only downside of reducing your wheel diameter is top speed and that's all but the acceleration will definitely be better.

[@OEMplusRESTO]

Thank/ for the insight. Much appreciated, i wish i was better at making tests(and videoes) when doing this one, This video is really poor. First real video i did. I should have tested it 50-110kmh in the same gear which is what im doing now for various other parts testing. While the gearing change certainly matters, wheel weight does too. I think you will find my diff test video interesting, a 2.93 diff is faster to 100kmh than a 3.38 due to one less gearchange. But the 3.38 accelerates much harder in gear. I will repeat this video again when im able to afford (and find) the right wheels:)

[@EpicsodeOne]

@@OEMplusRESTO Will watch it soon. Yeah mine is 3.38 but I've unlocked rpm to 7200 so at second gear I'm at 60miles @6800 rpm

[@OEMplusRESTO]

@@EpicsodeOne holy hell. Thats alot of rpm for a m54b30.. did you do any thing to your pump to have it last? I love the 3.38 rear so i can definitely relate to that choice💪

[@OEMplusRESTO]

Sub 5 second 0-60? Impressive.. my best is around 6.2 i believe

[@EpicsodeOne]

@OEMplusRESTO I have Iridium IX plugs, deleted the fan from the engine and placed it in the bay, some minor weight reductions and I have a very aggressive tune, also they've installed a 318 gearbox so I think that's why it's short, my downside is that I can't do more than 190 - 200kph.