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Maximum Tires Size Model Y Performance?

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I am trying to determine what the maximum tires size anyone can confirm so far on the MYP. I just swapped over to my winter setup, but will to replace the Pirelli’s come next spring. I am running 20mm spacer in the front and 25mm spacers in the rear.

I would like to run Vredestein Quatrac Pro’s.
Front:
275/40R21
Rear:
285/40R21

I believe I have seen some members post the rear size being okay, but I believe the front might be a little ambitious?

Any input would be greatly appreciated!
 
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Solution
I run 265/40R21 on the front and would not suggest going any larger — thus I agree with your intuition that 275/40R21 is a bit “ambitious”. I can virtually guarantee significant rubbing should this size rubber be mounted on the MYP with stock Uberturbines.

With regard to the proposed size for the rear axle, you can confidently mount your proposed spec (285/40R21) without issue.

Good luck.
I’ve had Michelin PSAS4’s ordered at Discount Tire since late Janurary, 275 & 295/35r21. The rear set came in almost immediately, but the 275 size is back ordered until the end of time at every tire retailer. I ended out changing my mind at the last minute to switch to 295/40r21 after seeing others on her confirm fitmwnt. As the temperatures are beginning to warm here in Indiana, I decided to go ahead swap back into my summer wheels/tires (Stock Pirelli’s on 21” Uberturbines). I had forgotten how worn the rear set was so I went ahead and scheduled Discount Tire to install the rear Michelin’s (295/40’s) and I’d just keep running the stock Pirelli’s (255/35) upfront until we can get our hands on the 275/35 Michelin’s. The Michelin’s are installed and look AMAZING, however, I didn’t take into consideration the considerable diameter difference between the 255/35 Pirelli’s & 295/40 Michelin’s. Let’s just say she is not happy about it. Lurching between the front & rear motor during driving, regenerative braking decreased warning, traction control annunciation resulting in being able to activate not auto pilot, but also just cruise control. Anyways, I decided to opt for the 265/40 Michelin PSAS4’s as we are able to get those in for installation on Monday, and that is what others have confirmed without issues.

This was all probably something most of you would have thought of before encountering the issue, but if not, here is a friendly warning of my mistake.

The pictures for now are of the 295/40r21 Michelin PSAS4’s installed on the stock Uberturbine’s with 25mm spacers in the rear.

I will update with pics from the front once installed.
 

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I swapped out my factory Michelin Pilot Sport All Season 4's for 265/40R21 front and 295/40R21 rear. Ride is great and they really fill out the wheel well so much better. I hope that the increased side Aspect ration and wider tires will help protect the wheels more. I am selling my take offs with less than 60 miles on them if you know anyone that needs a new set. $1,300. These tires are on back-order from Tire Rack.
Great informative posts by everyone here. With the 265/40 and 295/40s it’s good to hear about successful fitment and clearances. Do these clearances hold with a full passenger complement in the car or while towing?
 
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I swapped out my factory Michelin Pilot Sport All Season 4's for 265/40R21 front and 295/40R21 rear. Ride is great and they really fill out the wheel well so much better. I hope that the increased side Aspect ration and wider tires will help protect the wheels more. I am selling my take offs with less than 60 miles on them if you know anyone that needs a new set. $1,300. These tires are on back-order from Tire Rack.
Yours came from the factory with all seasons?

I am waiting for my MYP to be delivered. would love to have the all seasons for CO.
 
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Yes, slightly. It varies by speed, but according to the size at 60 MPH it’s about 1 MPH greater. But, I have driven past at least 5-10 of those electronic signs that show your speed and every one has exactly matched my Tesla odometer. I also believe that car odometers are not accurate and have some percentage of variation. So with these tires I consider the speed difference to be negligible.
I was told by a Tesla service tech when you have new tires put on, they enter the specs and it adjusts accordingly. (Yet another Easter egg?)
 
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I’ve had Michelin PSAS4’s ordered at Discount Tire since late Janurary, 275 & 295/35r21. The rear set came in almost immediately, but the 275 size is back ordered until the end of time at every tire retailer. I ended out changing my mind at the last minute to switch to 295/40r21 after seeing others on her confirm fitmwnt. As the temperatures are beginning to warm here in Indiana, I decided to go ahead swap back into my summer wheels/tires (Stock Pirelli’s on 21” Uberturbines). I had forgotten how worn the rear set was so I went ahead and scheduled Discount Tire to install the rear Michelin’s (295/40’s) and I’d just keep running the stock Pirelli’s (255/35) upfront until we can get our hands on the 275/35 Michelin’s. The Michelin’s are installed and look AMAZING, however, I didn’t take into consideration the considerable diameter difference between the 255/35 Pirelli’s & 295/40 Michelin’s. Let’s just say she is not happy about it. Lurching between the front & rear motor during driving, regenerative braking decreased warning, traction control annunciation resulting in being able to activate not auto pilot, but also just cruise control. Anyways, I decided to opt for the 265/40 Michelin PSAS4’s as we are able to get those in for installation on Monday, and that is what others have confirmed without issues.

This was all probably something most of you would have thought of before encountering the issue, but if not, here is a friendly warning of my mistake.

The pictures for now are of the 295/40r21 Michelin PSAS4’s installed on the stock Uberturbine’s with 25mm spacers in the rear.

I will update with pics from the front once installed.
To follow up from my recent post, the rears w/ the spacers do rub. I need to pull the spacers and verify that they fit. The fronts at 265/45 also rub when the wheel is completely turned without any movement. I currently have 25mm spacers installed on the front, which I think would help prevent rubbing on the inside of the fender well, so I'm not sure that removing them will make things any better.
 
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I’ve had Michelin PSAS4’s ordered at Discount Tire since late Janurary, 275 & 295/35r21. The rear set came in almost immediately, but the 275 size is back ordered until the end of time at every tire retailer. I ended out changing my mind at the last minute to switch to 295/40r21 after seeing others on her confirm fitmwnt. As the temperatures are beginning to warm here in Indiana, I decided to go ahead swap back into my summer wheels/tires (Stock Pirelli’s on 21” Uberturbines). I had forgotten how worn the rear set was so I went ahead and scheduled Discount Tire to install the rear Michelin’s (295/40’s) and I’d just keep running the stock Pirelli’s (255/35) upfront until we can get our hands on the 275/35 Michelin’s. The Michelin’s are installed and look AMAZING, however, I didn’t take into consideration the considerable diameter difference between the 255/35 Pirelli’s & 295/40 Michelin’s. Let’s just say she is not happy about it. Lurching between the front & rear motor during driving, regenerative braking decreased warning, traction control annunciation resulting in being able to activate not auto pilot, but also just cruise control. Anyways, I decided to opt for the 265/40 Michelin PSAS4’s as we are able to get those in for installation on Monday, and that is what others have confirmed without issues.

This was all probably something most of you would have thought of before encountering the issue, but if not, here is a friendly warning of my mistake.

The pictures for now are of the 295/40r21 Michelin PSAS4’s installed on the stock Uberturbine’s with 25mm spacers in the rear.

I will update with pics from the front once installed.
Ditch the spacers and get 265/40R21's for the front! They look much more symmetrical and will give you zero clearance and mechanical issues. My setup looks and rides like it should have come from the factory.
 
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To follow up from my recent post, the rears w/ the spacers do rub. I need to pull the spacers and verify that they fit. The fronts at 265/45 also rub when the wheel is completely turned without any movement. I currently have 25mm spacers installed on the front, which I think would help prevent rubbing on the inside of the fender well, so I'm not sure that removing them will make things any better.
Removing the spacers in the front will definitely help with rubbing if it's the outer edge/corner of the tire that is rubbing the wheel well, it might be counterintuitive to some, but spacers increase scrub radius which, amongst other things and all else being equal, will reduce the clearance between the outer edge of the tire and the front or rear of the wheel well at full lock.


On the other hand, if you had said that the inside sidewall of the tire rubbed on suspension components, then adding a spacer would help.
 
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I have a general question for those who went with larger tires, either 275/35 and 295/35 (what I'm considering), or 265/40 and 295/40, were you able to see a hit on efficiency? I'm particularly curious about the 275/35 295/35 as I'm considering swapping the rear tires to the front wheels, and getting 295/35 for the rear when my MYP comes in to give a bit more sidewall to both front and rear and reduce the amount of stretch vs. OEM.

I can take a 2-4% efficiency and range hit, but I'll abandon the plan if it's closer to a 10% hit. Anybody compare the before/after consumption on a similar route?
 
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I have a general question for those who went with larger tires, either 275/35 and 295/35 (what I'm considering), or 265/40 and 295/40, were you able to see a hit on efficiency? I'm particularly curious about the 275/35 295/35 as I'm considering swapping the rear tires to the front wheels, and getting 295/35 for the rear when my MYP comes in to give a bit more sidewall to both front and rear and reduce the amount of stretch vs. OEM.

I can take a 2-4% efficiency and range hit, but I'll abandon the plan if it's closer to a 10% hit. Anybody compare the before/after consumption on a similar route?
I have a mix of that which you listed above (265/40 up front and 295/35 out back) and have only a minimal range hit. So minimal, in fact, that I haven‘t officially measured it so I can’t provide definitive before/after metrics but my energy usage on my daily commute hasn’t materially changed. No regrets. Nada. None. Zip.
 
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To follow up from my recent post, the rears w/ the spacers do rub. I need to pull the spacers and verify that they fit. The fronts at 265/45 also rub when the wheel is completely turned without any movement. I currently have 25mm spacers installed on the front, which I think would help prevent rubbing on the inside of the fender well, so I'm not sure that removing them will make things any better.
UPDATE:
Front: Michelin PSAS4’s 265/40 are installed with 10mm spacer and no rubbing. For me this achieved the ideal look since the 275/35’s are back ordered for eternity.

Rear: Michelin PSAS4 295/40 installed without spacers and fit without rubbing now, as mentioned by other users. I had tried both 25mm & 20mm spacers in the rear and would get rubbing under extreme suspension compression (80mph traveling over bridge seams)
I am going to try 10mm spacers in the rear to see if ai can clear those. I will update once they arrive and I can get them installed.
 
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For those interested:
10mm spacers installed on front & rear now with Michelin PSAS4’s 265/295-40r21. No rubbing so far.
 

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Hi everyone, a lot of very helpful comments on here.
Thanks for the info! I’m having trouble trying to find a tire that I like that also comes in both sizes that I need. Good to know the largest I can go in front as I will use that as my search criteria now.

Do you think I’d still be safe in the rear if I went up to a 295/40/R21?
I just had MICHELIN PS AS4 265/40R21 fronts and 295/40R21 rears installed. So far so good, but those rear tires are huge with over 4 1/2" of sidewall.
Hi everyone, a lot of very helpful comments on here. I’m planning to buy a new Tesla Y and I’m wondering whether to just order the 19 inch rims and then buy 22 inch rims with the tires suggested in here which it looks like our 265 in the front and 295 in the back. Or, do the 20 inch induction rims work with these tires. I basically want a full look but also a fairly comfortable ride. I don’t mind getting 21 inch rims but I would then also follow the same strategy of just buying the basic 19 inch and buying my own rims separately. Can anyone recommend which size rims? Also are the Michelin the best soft ride? Thanks
 
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