Model Y performance tires

[Paulienola]

I want to increase the aspect ratio on my model y performance tires from 35 to 40 for a softer ride. Can You use a 255/ 275 40 21. That should fit on the 21” ubertine rims - right? Keep the other dimensions the same just increase the aspect ratio. Does that cause any issues.

 

[Goobers]

It'll fit, but make the overall diameter about an inch bigger.

It can affect performance as the drive ratio. But the most noticeable effect will be on the speedometer (and over time, the odometer too). Its a 3.5% increase in diameter/speed, meaning that, when it says you're going 60, you're more likely going over 62.

 

[purge00]

Lots of people even go 265/295 and 40s on the 21" wheels.

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

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...

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