I rode the slicks in the RRR team challenge and the sprinted the ASRA classes on DOTs Sunday, both Conti. You'll be happy either way. I didn't do any laps when the slicks were new, but I will say they have an entire Team Challenge on them and our lap times didn't drop off the entire time. The tires look barely worn; I'm going to run them this weekend at the WERA event most likely. If not, they'll be good for several track days.