Fast, if your car weighs over 3500 lbs., you want the Bonneville front runners which are identical to the drag race front runners but have three times more sidewall cords. If you spin your car on the drag race front runners with a heavy car, you are asking for trouble. The drag race tires take 35 psi, and the Bonneville tires take 75 psi, so you can imagine the difference in side loads in a spin............ Bob