Like drummer said, you gotta break tires in for them to work. Take them out on the street and break them in a little.

I know WCRC Raceway, is "some of the best traction in the US" but the time where my tires work best is when they get to the point where after a run you have that fat line in the middle of the tires, almost completely worn out. Even though there is minimal tire wear at WC