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

[Lucky Y]

Hello, has anyone had any experience with using snow chains on these new tire size, 295/40/21?

 

[Raurele]

Hello, has anyone had any experience with using snow chains on these new tire size, 295/40/21?

I have not. Haven’t been lucky enough to be in snow yet this year… but you can get chairs for basically any tire size… and with chains you never want to turn sharp while moving so that clearance shouldn’t an issue.

 

[Lucky Y]

I have not. Haven’t been lucky enough to be in snow yet this year… but you can get chairs for basically any tire size… and with chains you never want to turn sharp while moving so that clearance shouldn’t an issue.

Thanks. I was thinking about to put chains on the rear tires since front ones would be really tight with the new up size, 265/40/21. Please let me know if anyone has tried it and encountered any issues?

 

[Sango2]

Just updated to 2022.40.4.1 2022.40.4.1 Official Tesla Release Notes - Software Updates

Tire configurator got updated BUT you still can't pick tire sizes.
It lets you pick wheel size, square or staggered set up for wheels and for tires you can pick winter or all season/summer.
And that's about it.

Good step in right direction but allowing to pick tire size would be awesome!

The more accurate feature is to actually allow the user to enter the revolutions per mile / km for the tire. This is because the tire you select will have a particular revolution and it could differ if you select a different brand/model of the same spec you are looking for.

 

[NicholasRipa]

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 853304
View attachment 853305

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

These look awesome thanks so much for the review. Still no issues? I think I’m going to pull the trigger I am a still little worried going in and out of parking lots on a sloped driveway.

 

[Raurele]

These look awesome thanks so much for the review. Still no issues? I think I’m going to pull the trigger I am a still little worried going in and out of parking lots on a sloped driveway.

I put them on at 37k miles. I hit 50k last week. Perfect tires still. You won’t regret it. Especially if you have to get close to curbs often. They’ve still never rubbed or anything. Had others comment that the ride is noticeably smoother as a passenger.

 

[RedSupraT]

Thinking about stopping by Discount Tire tomorrow and ordering new 295/40/21's for the rear and moving the existing rear tires to the front. I've seen a few others have done this. Was ride quality improvement worth the cost to swap them out? All 4 OEM tires are ridiculously low profile for such a heavy vehicle but the fronts worry me the most.

The car is 2 weeks old with 1,600 miles and part of me wants to just order some new 19 or 20's but after seeing the cash I lost yesterday after the price reductions, not sure I wanna put any additional money into it now. May just roll on with the Uberturbines and call it a day.

 

[RedSupraT]

Stopped by Discount Tire yesterday and was advised that corporate won't even let them install the 265 & 295/40/21 tire combo. Ridiculous!

 

[Here4gangbang]

The OE tires are "T0" Tesla spec, which actually has a thicker rim protector that sticks out - spec'd by Tesla for this purpose. So, if you have a propensity to drive into curbs, worth noting. They're stretched, but the rim guard is specifically larger on this custom tire to account for fitment on the Uberturbines.

Also, you don't need to change the aspect ratio to gain some thickness. Going with a wider tire and staying with a 35-series tire will still get you a slight increase in sidewall height due to the nature of how the measurements work.

Personally I think going up to a "40" looks a bit awkward but that's just me

Custom T0 OE rim protector?

That’s hysterical… go ahead and get yourself a MYP and do a year or so of city driving/parking… let me know how that “rim protector” works out for ya…

 

[fiehlsport]

Custom T0 OE rim protector?

That’s hysterical… go ahead and get yourself a MYP and do a year or so of city driving/parking… let me know how that “rim protector” works out for ya…

Hey, I never said it was going to stop curb damage entirely. But there's more of a guard on these than the non-T0 tires, even when the non-T0 tires are wider than stock.

Basically, if you are careless when parking, it doesn't really matter which tire you have since the wheel is going to find its way into the concrete regardless. T0 might give you 1/4" more leeway...

And I correct my original post... they aren't really stretched. They appear stretched, but the T0 tires are actually molded with the angle in the sidewall to account for the wheels that are too wide for the section width. If they were stretched, the beads would be further inward.

 

[Destiny1701]

I’ve had 295/35/21 rear and oem 275/35/21 on my July 22’ MYP from day 1. I will say the ride comfort is way better and I keep my psi to 38/39. All those smaller road imperfections and repairs which you feel on stock oem…vastly reduced.

Most efficient cost structure as only 2 tires to buy. The 255’s are in my garage as spares.

Makes the ride comfort just fine overall and perfect sidewall coverage.

 

[RedSupraT]

Got a call back from the local Discount Tire after submitting an inquiry to corporate about moving up to the 265 & 295/40/21 tires. Manager said no problem installing them and they will order the tires and provided an additional discount on them as well. I did provide a link to this thread in my inquiry so maybe it help change their mind. haha

 

[orion48]

I had the Michelin Pilot Sport All Season 4s installed at Discount Tire two weeks ago. The same tires were on sale at Costco, but they wouldn't install them, and Discount Tire matched Costco's sales price and had no problem installing them. 265/40/21 in the front and 295/50/21 in the back. They give my MYP a smoother and quieter ride, and they have been great in that the recent California storms. I definitely feel less bumps with these tires. BTW, I got 26K miles out of the stock P-Zeros, which was about what I was expecting. I recommend the Michelins.

 

[fiehlsport]

295/50 in the back? Is that a typo?

 

[orion48]

295/50 in the back? Is that a typo?

Whoops! Yeah, a typo! 295/40/21. Thanks for the heads up!

 

[fiehlsport]

Ha, I thought they looked beefy, but not that beefy.

 

[Raurele]

Stopped by Discount Tire yesterday and was advised that corporate won't even let them install the 265 & 295/40/21 tire combo. Ridiculous!

Go to another store. The manager asked me if I was sure, I showed him pictures of someone else’s, And agreed they won’t be responsible. Zero issues with discount tire.

 

[Raurele]

I had the Michelin Pilot Sport All Season 4s installed at Discount Tire two weeks ago. The same tires were on sale at Costco, but they wouldn't install them, and Discount Tire matched Costco's sales price and had no problem installing them. 265/40/21 in the front and 295/50/21 in the back. They give my MYP a smoother and quieter ride, and they have been great in that the recent California storms. I definitely feel less bumps with these tires. BTW, I got 26K miles out of the stock P-Zeros, which was about what I was expecting. I recommend the Michelins.View attachment 896449

They have been FANTASTIIC in the Bay Area during all this weather. Especially on Hwy 17 daily.

 

[Here4gangbang]

I’ve had 295/35/21 rear and oem 275/35/21 on my July 22’ MYP from day 1. I will say the ride comfort is way better and I keep my psi to 38/39. All those smaller road imperfections and repairs which you feel on stock oem…vastly reduced.

Most efficient cost structure as only 2 tires to buy. The 255’s are in my garage as spares.

Makes the ride comfort just fine overall and perfect sidewall coverage.

View attachment 896393View attachment 896394View attachment 896395View attachment 896396

Looks great. But just curious, if you’ve had the bigger profile tires on from day 1, how would you know the difference?

 

[Raurele]

Looks great. But just curious, if you’ve had the bigger profile tires on from day 1, how would you know the difference?

( Review writer here) Lol good point. I personally had the lower profile ones for over 30k miles. I’m at 51k now. The difference is huge.