DARRYL D

I know this section is for CLA 45 AMG but my girlfriend has a 2015 CLA 250 4matic and were looking to get her a snow tire package.

My question is what size tires should she be looking for? im guessing 17inch rims with 225/45/17
Would she be able to run a 18inch setup? if so what size tires.

I dont know much about the CLA 250..

Thanks,