I plan to run 18s in the front and 17 s in the rear most people probably wont like it, but my car is more function over form the 18s will give better turn in characteristics and clear the 14 inch brakes and the 17s in the rear will give me more side wall and hopefully help with better traction and ride quality.
Brian
That is the setup most top autocrossers run on the vettes. Works great!