If you're going more with a sports look what about something like this....

You won't need treads on the tyres. The way things are going, in the near future there will probably be a compound to make the tyres 'stick' to the road. If your bike is in a moving pose, the speed your bike will be going you wouldn't make out a tread anywho.
*You'll never get that tucked in speed that you get from a japanese street bike though.
Wash your mouth out, Italian bikes are better!

Best bike I ever had was a wee Aprillia RS250. The neighbours used to love it on a nice sunday morning. They'd just put their washing out and I start up my wee 2 stroke only for an oily blue smoke cloud to come out the back!!