Search around a little bit...you'll find a wealth of information. onlinetires.com is another good place to look. I don't know how performance oriented you are, but if you are interested you can run 215s, either 40 or 45 series tires. I previously had 205/50s and the difference with 215/40s is night and day...SOOOO MUCH MORE GRIP! FYI, I got my set of Hankook Ventus HRIIs from onlinetires.com for $273 for the set...