i couldnt beleive it i just got my 315's the other day and tonight wanted to see if i could break them loose at all. well with the powerpup set on extreme i punched it and boy was i suprised!! about 5 seconds later the tires finally caught and down the road we went like a bat outa hell. its probably not the smartest thing to do with my 3. 73's but i couldnt resist.