Tire swap and size question - Tesla service won't install out of spec size

[MatildaModelY]

I currently have the 20" PS4s installed with the referral zero g wheels.

For winter I'd like to go down to 19" and I have an order of 19" Martians on the way. Problem is, I'd really like to install the Michelin Alpin PA4's. Only size they come in is NON XL 235/40R19 or 235/45XL rated 19.

Tesla won't install either of these because the first one they say isn't load rated appropriately, and the second they said might have some rubbing due to the ever so slightly larger size of 45. Am I fine with either if I can find someone that would do mount and install? Will the bigger ones rub?

 

[gaswalla]

probably should get the right tires: the load index and clearance of the tire do matter.
After that, anyone can install them. Don't waste service center resources with tire installs

 

[jerry33]

Because Tesla is the manufacturer, they have to stick to the OE parts (unless they want to go through the certification process, which is tedious and costly). However, there is nothing magical about the tires and wheels, so any tire store can do it. No idea if they will rub, but they will reduce range, mess up the speedometer, gearing, etc. Having a lower load rating often means a blowout down the road. Seen way to many of them. (A higher load rating is fine.)

 

[MatildaModelY]

Apparently EVtuning says that 235/45's will rub.

 

[1.21GW]

Of course they wouldn’t and shouldn’t.

Both load rating and tire diameter matter for different reasons.

 

[MasterC17]

FWIW, Vredestein tires have been getting some pretty good ratings. May consider these: https://www.tirerack.com/tires/tire...odel 3&autoModClar=Dual Motor All-Wheel Drive

 

[MatildaModelY]

Of course they wouldn’t and shouldn’t.

Both load rating and tire diameter matter for different reasons.

the 20" Michelin PS4 have a load rating of 92. Why shouldn't I be able to install a 19" tire with the same 92 rating?

 

[Sam1]

the 20" Michelin PS4 have a load rating of 92. Why shouldn't I be able to install a 19" tire with the same 92 rating?

They're not 98?

 

[MatildaModelY]

They're not 98?

Pilot sport 4s are 92Y.

 

[lbowroom]

No reputable tire shop will mount the wrong load range tires. Experimenting with rubbing, that’s possible.

 

[MatildaModelY]

No reputable tire shop will mount the wrong load range tires. Experimenting with rubbing, that’s possible.

model 3 performance is rated at 92Y. Model 3 awd is 96. Makes no sense.

 

[Sam1]

model 3 performance is rated at 92Y. Model 3 awd is 96. Makes no sense.

Maybe one of the tire gurus can chime in... Think it's because of the shorter sidewall probably, because I just picked up a set of the 18" ps4s, and they are rated 98y.