[Hal Copple]

unless you run race tires in 15 inch, which are poorly suited for everyday, street use, there are no tires i am aware of that are rated very fast, one of the best of these, though, are the Avid's. Goodyear is bringing out a replacement for the GT II's, but they are not yet in appropriate sizes, and i am not sure if they are speed rated higher than S or T. There is of course a vast variety of 17 inch tires, if your country requires tires that match the speed capability. If i were in Europe, i would run the 17's.