[marty]

I run 15's and Dunlops. If you really want to learn to drive and aren't concerned about being passed by half the field, stick with 15's (not much tire choice, but the wheel size looks better to me). If on the other hand you want to go "fast" and drive on the street on the same set of wheels and tires, go to 17's as you will then have an abundance of tire choices, good to great!