I run the 315 drag radials, big engine, little cam, lots of low end grunt. I put 300 lbs, weight in the trunk, and left in second gear. In Kansas City the track started out pretty slick, but was starting to come around later on in the day. Wheelspin was not a problem later on in the day, kinda wish I would have tried a low gear launch. Lack of a power adder is what cost me the win. A dialed in turbo car is hard to beat, but a Nox car is what got to me. Better have your cooling system in top shape. Good luck.