Originally posted by R2 Racing:
I actually did a pretty good back to back comparison of a set of V710's and a set of S04's - each with a qualifying session and a race on them. They were at the same track, on the same weekend, no other changes made to the car, and weather was very similar.
I ran a race on the Kumho's and honestly, I was never cursing them at all. They were predictable, didn't fall off, and I thought did a pretty good job.
I then ran a race on the Hoosier's and they were better. Basically, the slower the corner, the bigger the difference was. Albiet minimal, there was still a difference - you could just carry more speed and get down to the apex. Basically when you need that extra .5 second, slap on some S04's. If you don't, go with the Kumho's and get a fat check.