I'm wondering what the smallest diameter wheels are that can go on an SL55? I'm sure it can't be too far off from the stock 19's since the AMG breaks are so large. I want to get a second set of wheels and tires, but want the smallest diameter wheel for it. Any help is appreciated.

I think I read somewhere that certain 18's fit?

Stock from the factory is 18 inches.

I'm thinking I can get away with 17" now all I need is all the right measurements and offset, etc.

....begs the question, why?

Going to use the car all winter. Want bigger side walls for winter tires.

Originally from a very snowy and COLD part of the upper Midwest, sure glad I don't have to deal with snow unless I choose to drive to the mountains (in my SUV)... Best of luck.

I was hoping it was something more to the tune of "track day slicks and skinnies"

18's are the stock size and they barely clear the calipers.

I believe in using my cars, but an SL55 as a snow beater? Surely there is a $500 pos available for that duty.