tbh...my vr still feels as nimble on 17's as it did on 15s.....poss a bit harsher ride due to the lower profile tyre but nothing to worry about really...as for the performance issue I’ll be very surprised if you notice any thing check out the link...all will become clear http://www.polo-gt.co.uk/mechanical/tyrecalc.html [ Edited Mon May 16 2005, 06:47PM ]