Ok, well, most people on this board couldn't tell a mud and snow tire from a dedicated race tire. Obviously you do. I run autoX on the Azenis since they are the best for STS. But my experience in G stock and track events tells me that the Kumho Victoracers in a 225/50-16 also. R-compounds are more consistant throught a run as they get warmer so with track events my Azenis fall off in grip and the Victoracers keep on gripping.