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Maximum Tires Size Model Y Performance?

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FlyGuyM0delY

Member
Nov 30, 2021
17
9
Indiana
#1
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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MJP.P3D-
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.
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#14
Best_EV said:
No, 295/35 R21 is max for the rear or 285/40 R21 if you want more sidewall. I am pretty sure 295/40 R21 will not work, maybe someone has tried it out...
Click to expand...
I hope you’re wrong because I’ve got a set of 295/40/21 that I’m hoping to have installed next week. Others have managed 285/40 and 295/35, it’s only very slightly taller and rough measurements seem to indicate they’ll fit. But I’ve considered ordering a backup pair of 295/35 just to be safe.
 
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#15
Canyonero said:
I hope you’re wrong because I’ve got a set of 295/40/21 that I’m hoping to have installed next week. Others have managed 285/40 and 295/35, it’s only very slightly taller and rough measurements seem to indicate they’ll fit. But I’ve considered ordering a backup pair of 295/35 just to be safe.
Click to expand...
Please keep us all posted! I’d love to run 295/40 in the rear. What tire are you going with?
 
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#18
Edkwok said:
Since the diameter is greater than 28”, does that mean the actual speed of the car is higher than the indicated speed?
Click to expand...
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.
 
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#25
Here are some photos of the MICHELIN PS AS4 295/40R21 rears. The handling, ride and sound are all noticeably different with the 265/295 setup compared to the OEM Pirellis. The MYP is still is very confident in sharp curves, both my wife and I felt the ride is improved and although the sound is different on each road surface, cannot say it is any louder. Did the speed sharp turn/speed bump test and did not hear any rubbing.

295 Depth.jpg295 Side.jpg295 Rear.jpg
 
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#26
OutofPocket said:
Here are some photos of the MICHELIN PS AS4 295/40R21 rears. The handling, ride and sound are all noticeably different with the 265/295 setup compared to the OEM Pirellis. The MYP is still is very confident in sharp curves, both my wife and I felt the ride is improved and although the sound is different on each road surface, cannot say it is any louder. Did the speed sharp turn/speed bump test and did not hear any rubbing.

View attachment 746339View attachment 746340View attachment 746341
Click to expand...
Nice, looks like it fits just fine! And there definitely appears to be a bit more protection for the wheels. Stoked to mount these next week.
 
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#27
jeffzacharias said:
View attachment 742542

In case you are interested, the stock Pirelli 255/275 tires are in the top photo, and the Michelin all season 275/295 tires are in the bottom photo.
Click to expand...
So are we looking at 275/40R21 (29.7" Diameter ) front tires and 295/40R21 (30.3" Diameter) in the rear? If it is and it works with zero rubbing I am sold! It looks so perfect. I was thinking it was have a crazy tall side wall but it still looks factory.
 
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#28
I was considering installing Front: 265/40ZR21 (29.3") and 295/35ZR21 (29.1") to stay closer to a "safer" 29.0" total matching diameter. I am trying to avoid having to get a separate designated winter set of wheels. If we can get away with 21's all year long by using a 40 side profile that would be best case scenario.
 
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#29
BillyG2022MYP said:
I was considering installing Front: 265/40ZR21 (29.3") and 295/35ZR21 (29.1") to stay closer to a "safer" 29.0" total matching diameter. I am trying to avoid having to get a separate designated winter set of wheels. If we can get away with 21's all year long by using a 40 side profile that would be best case scenario.
Click to expand...
Even thought my 265/40R21 (29.3”) fronts and 295/40R21 (30.3”) rears are one 1" difference in diameter, they handle as good as or better than the OEM Pirellis and give a lot more pothole/rim protection.
 
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#32
Hsgill said:
Hey, do you have any update on this setup?
Click to expand...
Yeah…
teslamotorsclub.com

Michelin Pilot Sport All Season 4 on Uberturbines- 265/35 & 275/35R21

And by the way, whenever I replaced my staggered tires, Discount Tire always let me replace all 4, and they prorated the front two, since the rears were done at 20k miles, and the fronts had about half left. The first time I told them I had issues with stability control only replacing the...
teslamotorsclub.com teslamotorsclub.com

TL;DR I ended up with 295/35/21 in the rear, and I’m happy enough. Another guy in that thread did 40s and they seem to fit.
 
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#33
Canyonero said:
Yeah…
teslamotorsclub.com

Michelin Pilot Sport All Season 4 on Uberturbines- 265/35 & 275/35R21

And by the way, whenever I replaced my staggered tires, Discount Tire always let me replace all 4, and they prorated the front two, since the rears were done at 20k miles, and the fronts had about half left. The first time I told them I had issues with stability control only replacing the...
teslamotorsclub.com teslamotorsclub.com

TL;DR I ended up with 295/35/21 in the rear, and I’m happy enough. Another guy in that thread did 40s and they seem to fit.
Click to expand...

Just completed a trip SF-LV-OC-SF with the Michelin PS All Seasons 4 265/40R21 fronts and 295/40R21 rear.

Trip saw rain and some snow at higher elevations so glad I had All Seasons.

No rubbing front or back.

Need to watch speed as it is ~6% greater with the bigger rear tires. For example 75 on the display is really 80mph.

Road noise different than the OEM Pirelli P Zero summer tires, but no louder.

These Michelins are noticeably smoother riding than the OEM Pirelli P Zeros. Most likely due to larger sidewalls.

I was skeptical of All Season tires having always run summer performance, but so far so good.
 
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