i bought a set of these which had been used on track. (sc1 soft front and sc2 medium rear.) i have only used them on the road and was surprised how quickly they warmed up. they are fantastic in the twisties and give plenty of grip. they are also surprisingly grippy in the wet and when you give it too much throttle the slide feels very controllable. the down side of a track focused tyre is that mileage is quite short. ive done about 1300 miles and rear tyre has gone from 5mm to about 1.5mm. although ive got to admit im never really easy on the throttle. they are quite expensive tyres brand new however you can buy track used ones with plenty of tread left for less the a quarter of the price. best tyres ive used!