The tire rack has several different fitments for the rear of your car from 8.5" to 10" and in the front 8" & 8.5" are the selections Carlsson & BBS offer the 10" width with a couple of diferent designs. However the AMG wheels would be 8" & 9".
Tire size would depend on the wheel width that you selected, but I would recommend 225/40-18 & 265/35-18 ( the rear size might need a fender lip roll with a 10" wheel)
Thanks, Luke
800-428-8355 ext. 362

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Luke Pavlick
Performance Specialist (ASE Certified Master Tech)
The Tire Rack
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