Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

Model Y Performance 21" Tires - Larger, More Comfortable Fitment Details and Experience - Michelin AS4's (With Photos)

This site may earn commission on affiliate links.
#242
So, I’m wanting to run 275/45 - 20’s on the front. 9.5” rims. Stock offsets of induction wheels and no spacers.
that’s a 29.7” diameter wheel. Stock on this car is 28” diameter 255/45-19”.

It looks like I have maximum of .75” to the steering knuckle. Other then that, it seems like this would fit.

I see there’s folks running 275/40-21’s…. That calculates at 29.7” diameter as well. Who’s running this and how is clearance on the steering knuckle?
In this GREAT review, we’re using 265/40-21’s calculates at 29.4” diameter. How’s the clearance on the steering knuckle?

I keep running my fingers between the steering knuckle and the 255/45-19’s (28”) and realizing the 1.7” difference in diameter calculates .85” bigger at the steering knuckle…. It’s CLOSE or no cigar…. Does anyone have some clear observations and measurements on the steering knuckle with the bigger tire choices? I really wanna do the 275/45-20’s. Get sidewall and diameter. But it’s clearly something I don’t see anyone else having done. I have seen Model Y Performance people running 275/20’s on 21’s…. But not very many, and I’m not sure if there’s any spacers involved in that.

If you’re out there—my brothers/sisters with 275/40-21’s or 275/45-20’s…. Speak to me, please.

Between my wife and I and our tiny town with whacked roads on the Oregon Coast—we’ve managed to damage the side wall and rims of the stock tires—I’m needing to make the plunge. I’d like to get the biggest tire I can get in the front.

Thanks in advance for sharing your experience and observations.
 
#243
towndrunk said:
FYI there's a thread here where the MY owner had oversize tires with aftermarket wheels and needed a new steering rack and Tesla would not pay for it, claiming it was caused by the larger & heavier aftermarket wheels and tires. So I'd worry about more than just tires rubbing.

teslamotorsclub.com

2022 MYP Steering rack Failure. Tesla DENYING warranty coverage due to aftermarket wheels 20x10 with 275 40 20 set up

My 2022 MYP has aftermarket wheels with 20x10 wheels, 275 40 20 tires. Less than 8K miles so far. As far as I know this is pretty popular set up. Sold by leading aftermarket brand here (I am not convinced the wheels caused the issue. Don't want to say the brand so as not to damage their...
teslamotorsclub.com teslamotorsclub.com
Click to expand...
OP here. That’s not because of the tires. I’m a 35k on my second set. Steering is flawless.
 
#245
Raurele said:
I recently had to replace my 2022 MYP OEM Michelin All Season 4's and after a lot of research, and tire hunting, wanted to share my experience and the direction I went. Valuable information for those close to ordering new tires. I just drive 2000 miles through Santa Cruz, San Jose, Sacramento, and did a weekend in Tahoe, driving on many dirt roads and rough roads.

First off, I will never go with another set of tires after having these. I made it to 37,000 miles with 3/32 left on all 4 tires. they wore evenly. Their performance in heavy rain and even 6" of snow was unbelievable. Ive had multiple cars with Pirellis, and always stuck with them, but was not happy with the miles I got out of them, and the thought of getting 27,000 miles on them with an EV just sounds terrible considering the price.

The Tires

I went up in size with width, and sidewall.

Stock/OEM for the MYP is:
Front: 255/35/21
View attachment 853290
Rear: 275/35/21
View attachment 853291

The tires I chose are:
Front: 265/40/21
View attachment 853292
Rear: 295/40/21
View attachment 853293
Fitment

Front wheels fully turned, there's still >1" to the inner tire well. So no rubbing at all, even with quick turns into parking lots (Where you would probably get rubbing the most)
Rear wheels haven't rubbed on any large bumps. I even tried to get them to rub. nothing.

The main bonus functionality wise is that the tires extend farther out than the rims. not much, but they do.
View attachment 853301

Look

The difference is huge. Pictures don't do it justice. When I see other MYP's now, the OEM tires look stretched and the amount of room in the tire well looks like a mistake. maybe not on the MYLR, but for a performance, the larger sidewall REALLY looks great. It creates the illusion that your car is lowered, but its actually ~1.5" higher clearance

It truly looks performance even though It can handle bumpy roads and "All Season" conditions even better.

Before:
View attachment 853299

After:
View attachment 853302
Efficiency

This part was really interesting.

Bigger tires have a higher rolling resistance than smaller tires which means they require more resistance and effort to get them rolling. However, if you do a lot of freeway driving at high speeds, larger tires can help increase your vehicle's efficiency.

So, days I drive a lot in the city with lots of stop and go, I get about 7% less range. but when I do a lot of freeway driving, I get about 7% better range.

I drive 150-350 miles a day, and have found zero difference in range because I do a wide range of road types. I really thought I'd lose range.

Feel

WOW, what a difference. Sure the suspension is still stiff, but I feel a LOT less of the small imperfections of the roads I drive on every day. even my girlfriend said she noticed it before I got to point it out. Speed bumps and things feel much better and not like im driving over a 2"x4". This is my favorite part of these tires functionality wise. Cant describe it.

There is no foam in the tires, but they are STILL quieter than the OEM with the foam. that stuffs a gimmick.

Things To Be Aware Of

Speedometer: It is not going to be accurate. Due to the larger diameter, it is off. I called Tesla, and talked to 2 different service centers, and there is nothing they can do about it. This seems like something Tesla overlooked. The only thing you can change is your rim size in your cars settings, but not the diameter...

So, when my car says im going 70MPH, im actually going 74MPH.
says 25, im going 26.5
says 40, im going 43
says 65, im going 68.5
says 85 (for AP max) im going 90.

This is something that as long as you keep in mind, it doesnt matter. I just changed my cruise control settings so it doesn't add 5MPH anymore. I chose 7% increase and it's fine.

I dont know if it's the new beta version, or that the car thinks its going slower than it is, but ive noticed that on AP/FSDbeta, it is taking turns a little wider and sometimes touches the lines on the outer edge of the turn if im going above 50mph. I'm pretty sure it's the speed issue.

This really needs to be able to be corrected by the user in the settings. sometimes switching brands can add .5in of diameter even if the tire is the same "size".

Conclusion:

Go Bigger! the OEM tires are actually stretched on your Uberturbines. they are meant for wider tires but Tesla went smaller for efficiency reasons, which in the end, didn't matter. Finding the OEM sizes of these wonderful tires is basically impossible. They are on a national backorder right now which is why I went for a different size in the first place. These tires arent cheap, but they ARE worth every penny.

American tire warned me that they weren't OEM sizes, and I told them I know for a fact they will fit and they had no problem installing them.

Here's some more pictures just for fun. These are some CHONKY tires. Thicc with 2 "C"s. tiny American tire man for reference.
View attachment 853304View attachment 853305
Click to expand...
Looking at going for the same tire upgrade in size for my Model P. Do you continue to be happy with the larger tires? Any issues to report? Thanks
 
#247
TallTexGuy said:
Looking at going for the same tire upgrade in size for my Model P. Do you continue to be happy with the larger tires? Any issues to report? Thanks
Click to expand...
I have the 275/295 35 21 combo since July 2022. Driven around 30k Km in 10.5 months.

Front 275’s are both starting to feather on the inner tire causing a bit of a noise when at lower speeds. Sounds like a belt shifted sort of noise. Annoying and Tesla SC said it’s likely a camber issue but that the stock front alignment/suspension was not designed to take a 275 Vs a 255. Not sure I believe that but nevertheless it sucks. Still have plenty of tread so don’t want to replace them.

Also I had a nail repair in one of the rear 295’s close to the sidewall. Barely repairable . Now after a month it’s also making a bit of a sound. It was a $20 repair Vs a $500 replacement.

While the drive is way nicer in terms of comfort and the tires don’t look stretched, not enjoying the experience.
 
  • Like
  • Informative
Reactions: CASE01 and Noflash
#249
Destiny1701 said:
I have the 275/295 35 21 combo since July 2022. Driven around 30k Km in 10.5 months.

Front 275’s are both starting to feather on the inner tire causing a bit of a noise when at lower speeds. Sounds like a belt shifted sort of noise. Annoying and Tesla SC said it’s likely a camber issue but that the stock front alignment/suspension was not designed to take a 275 Vs a 255. Not sure I believe that but nevertheless it sucks. Still have plenty of tread so don’t want to replace them.

Also I had a nail repair in one of the rear 295’s close to the sidewall. Barely repairable . Now after a month it’s also making a bit of a sound. It was a $20 repair Vs a $500 replacement.

While the drive is way nicer in terms of comfort and the tires don’t look stretched, not enjoying the experience.
Click to expand...
Weird. I’m at 32k miles (51km) on this set and wear is even. Probably going to make it to 38k.
 
  • Informative
Reactions: Noflash
#252
larns576 said:
Would the non oem tire size affect warranty on steering & suspension?
Click to expand...

One person, who needed a new steering rack, has to pay for it themselves due to Tesla not liking the larger tires and aftermarket wheels on it. Seem my post further up.
Toast. said:
Called Costco and they said if I go in person and order they can get AS4’s for

295/40/21 $436
265/40/21 $402

Will go in and order soon unless there is a newer better solution to help my bumpy ride. Thanks for this great thread, looking forward to the improvement but not the Speedo problem.
Click to expand...

I have not researched your posts, but have you tried inflating your tires to 39 psi cold? Elon says that's a 2% loss of range.
 
#254
Costco was a big disappointment, they can order the tires but will not install them. The service rep explained that they could not install since they are over 3% height variance over oem and he guaranteed they would rub. Looks like i'm going elsewhere.
 
#255
Toast. said:
Costco was a big disappointment, they can order the tires but will not install them. The service rep explained that they could not install since they are over 3% height variance over oem and he guaranteed they would rub. Looks like i'm going elsewhere.
Click to expand...
I had to have American tire install them. Costco was difficult for me too. The manager warned me of the same but was willing.
 
  • Like
Reactions: Toast. and OutofPocket
#256
Raurele said:
I recently had to replace my 2022 MYP OEM Michelin All Season 4's and after a lot of research, and tire hunting, wanted to share my experience and the direction I went. Valuable information for those close to ordering new tires. I just drive 2000 miles through Santa Cruz, San Jose, Sacramento, and did a weekend in Tahoe, driving on many dirt roads and rough roads.

First off, I will never go with another set of tires after having these. I made it to 37,000 miles with 3/32 left on all 4 tires. they wore evenly. Their performance in heavy rain and even 6" of snow was unbelievable. Ive had multiple cars with Pirellis, and always stuck with them, but was not happy with the miles I got out of them, and the thought of getting 27,000 miles on them with an EV just sounds terrible considering the price.

The Tires

I went up in size with width, and sidewall.

Stock/OEM for the MYP is:
Front: 255/35/21
View attachment 853290
Rear: 275/35/21
View attachment 853291

The tires I chose are:
Front: 265/40/21
View attachment 853292
Rear: 295/40/21
View attachment 853293
Fitment

Front wheels fully turned, there's still >1" to the inner tire well. So no rubbing at all, even with quick turns into parking lots (Where you would probably get rubbing the most)
Rear wheels haven't rubbed on any large bumps. I even tried to get them to rub. nothing.

The main bonus functionality wise is that the tires extend farther out than the rims. not much, but they do.
View attachment 853301

Look

The difference is huge. Pictures don't do it justice. When I see other MYP's now, the OEM tires look stretched and the amount of room in the tire well looks like a mistake. maybe not on the MYLR, but for a performance, the larger sidewall REALLY looks great. It creates the illusion that your car is lowered, but its actually ~1.5" higher clearance

It truly looks performance even though It can handle bumpy roads and "All Season" conditions even better.

Before:
View attachment 853299

After:
View attachment 853302
Efficiency

This part was really interesting.

Bigger tires have a higher rolling resistance than smaller tires which means they require more resistance and effort to get them rolling. However, if you do a lot of freeway driving at high speeds, larger tires can help increase your vehicle's efficiency.

So, days I drive a lot in the city with lots of stop and go, I get about 7% less range. but when I do a lot of freeway driving, I get about 7% better range.

I drive 150-350 miles a day, and have found zero difference in range because I do a wide range of road types. I really thought I'd lose range.

Feel

WOW, what a difference. Sure the suspension is still stiff, but I feel a LOT less of the small imperfections of the roads I drive on every day. even my girlfriend said she noticed it before I got to point it out. Speed bumps and things feel much better and not like im driving over a 2"x4". This is my favorite part of these tires functionality wise. Cant describe it.

There is no foam in the tires, but they are STILL quieter than the OEM with the foam. that stuffs a gimmick.

Things To Be Aware Of

Speedometer: It is not going to be accurate. Due to the larger diameter, it is off. I called Tesla, and talked to 2 different service centers, and there is nothing they can do about it. This seems like something Tesla overlooked. The only thing you can change is your rim size in your cars settings, but not the diameter...

So, when my car says im going 70MPH, im actually going 74MPH.
says 25, im going 26.5
says 40, im going 43
says 65, im going 68.5
says 85 (for AP max) im going 90.

This is something that as long as you keep in mind, it doesnt matter. I just changed my cruise control settings so it doesn't add 5MPH anymore. I chose 7% increase and it's fine.

I dont know if it's the new beta version, or that the car thinks its going slower than it is, but ive noticed that on AP/FSDbeta, it is taking turns a little wider and sometimes touches the lines on the outer edge of the turn if im going above 50mph. I'm pretty sure it's the speed issue.

This really needs to be able to be corrected by the user in the settings. sometimes switching brands can add .5in of diameter even if the tire is the same "size".

Conclusion:

Go Bigger! the OEM tires are actually stretched on your Uberturbines. they are meant for wider tires but Tesla went smaller for efficiency reasons, which in the end, didn't matter. Finding the OEM sizes of these wonderful tires is basically impossible. They are on a national backorder right now which is why I went for a different size in the first place. These tires arent cheap, but they ARE worth every penny.

American tire warned me that they weren't OEM sizes, and I told them I know for a fact they will fit and they had no problem installing them.

Here's some more pictures just for fun. These are some CHONKY tires. Thicc with 2 "C"s. tiny American tire man for reference.
View attachment 853304View attachment 853305
Click to expand...


This is great info! I just want to know if your wider setups do cause more water/mud and rock chips to fly over the car's body since the tires protrude a little off the body (or don't they?).

Thanks again.
 
#258
Just wanted to give an update to people. I’m writing this sitting at americas tire:

Today I’m replacing this set after 9 months and 34,500 miles of LOVING this setup. No matter what car I have, I will never buy another tire (until they come out with AS5s lol).

Final details:

Ending with ~3/32 on all tires at the lowest point.

I never got an alignment. Inner wear on all 4 tires is about 1/32-2/32 greater than the outside. Was told by Tesla service friend that an alignment could have easily solved that with zero third party changes needing to be made, but the difference in wear isn’t really worth the cost since the extra 3-4k miles I could get, would be 3-4 weeks for me. “Your mileage may vary”. Pun intended lol

I drive all over California for work. 150-350 miles a day, 4-6 days a week. And I drive HARD. Regular stretches at 85-90mph. Many windy mountain roads faster than the majority would drive. Awful gravel roads. All styles really.


These got me through plenty of dirt roads, roads with fresh 6” of snow. California deluges of rain where others were hydroplaning, I was comfortable. Never had a scary moment. Snow performance was impressive. Actually hard to slide out unless I actively tried.

I ran them with 38-39psi(cold) at all times. With my ~2000 miles some weeks, I kept on top of this. After driving for a while, they leveled out at 42-43psi.

If you’re reading this and contemplating the size upgrade, or even the quality of the Michelin AS4s, ease your mind. Worth every penny ($2000 for full set).

If you’re a conservative driver you will get 40k miles out of these.

Hope others have shared my positive experience as well!
 
  • Like
Reactions: OutofPocket, Bart404, GenralSpecific and 3 others
You must log in or register to reply here.

Similar threads

fiehlsport
Tires: I installed the 21" Sailuns on my MYP - Happy so far
Replies
6
Views
419
Model Y: Driving Dynamics
fiehlsport
fiehlsport
E
2024 Model Y Long Range (MYLR) Tire Options
Replies
2
Views
369
Model Y: Driving Dynamics
Pianewman
P
J-a-x
Help me decide on my next tires! (Michelin Cross Climate, Sport Pilot AS, Continental ExtremeContact DWS)
Replies
39
Views
3K
Model Y: Driving Dynamics
ggunn9
ggunn9
elambo
The MYP is quite a performer.
Replies
5
Views
477
Model Y: Driving Dynamics
elambo
elambo
DayTrippin
MYP accelerated rear inner tire wear like MS Plaid - Texas example - check yours
Replies
52
Views
3K
Model Y: Driving Dynamics
ngng
ngng
Top
Back
Blog
New
Forum list
Marketplace
Menu