[Waise]

For my 2019 X7 All-Season Tire size is: 285/45/r21.

Below are supported winter snow tires from Discount-Tires. You can request R21 as well. I was looking for studded Snow winter tires and wheels. We take lots of road trips and the most we may need winter tire is 2 to 3 months in a year.

275/50/r20
285/50/r20
295/45/r20
295/50/r20

So here is what I installed. Studded Snow Tires: 285/50/R20 Wheels: 8.5"/R20.
I orderedd via Discount Tires.

Total cost with 15% discount: $2,220.

On my iDrive for the list of tire selection see below picture but the automatic air suspension made the auto. selection and adjustment. The system has selected "Other Tires" option.