I 've been searching for a while on here to see what size tires will fit the stock 17x7" wheels on the SS/NA..the 205's seem too skinny and the Pirelli's are ok but not great by any means. Anyways, I did some research on 1010tires.com and it looks like a 225/45-17 will fit the rim with a size difference of only 0.4% (25.07in stock vs. 24.97in). Just thought I'd share for anyone else looking to upgrade. I think I'm going to go with some Toyo Proxes 4's in this size.