What tyre sizes? I have been lucky enough to get a new set of Marvic mag wheels.The rear is a 6.25",which means a switch to a 190/50 or 190/55 rear tyre.What size combinations are you guys using and why? Can i retain the 120/70 Front or does that need to go? I want turn in speed as opposed to stability.Oh,and i'll be sticking with Pirellis Diablo Corsas!! Thanks in advance. Jasper |