I had great time on Saturday. I ran this track in Janurary with my old brakes and tires, I had fun then but I boil my brake fluid and spun out once. In April I upgraded to 13" rotors W/ 2 piston calipers and 17" wheels with some good rubber. What a difference!! This time I was running a lot faster in the turns, I only had to wave one car (BMW M5) by the entire day.
Ben take a look
http://www.arizonamotorsportspark.com/