u/FrannyJeffers1g1g

Hi,

My car is a 2019 Cayenne E-Hybrid. With Air suspension.

I recently needed to replace my tyres and in my stupidity I ended up buying some wrong size tyres and wondered how much of an issue it is.

OEM: 285/40/ZR21 Pirelli Pzero
315/35/ZR21

I have replaced with 285/40/ZR21
And 315/40/ZR21.

Misread what I had written down and bought the wrong rear tyres. I also drove them a bit and can’t return.

How much of an issue is this? Any input even calling my dumb and should definitely change will be appreciated