I just finished a track Dave A NJMP. Driving with an instructor, we worked on improving my corner entry and exit speeds. 4 thirty minute sessions later and I am very impressed with these tires. Under track conditions they were extremely solid performers, had great grip cornering and braking, and exceeded my expectations.
I've tracked a Ferrari 360 in the past with much more expensive tires, and these were much better on track.
I'm looking to buy a new set of wheels right now for this car (that's why I'm here today) and they're getting this tire.
I've driven performance cars for 30+ years, these tires give the best bang for the buck of any I've driven on.
Definitely recommend them.