No, the inherent design of the car and tires makes any small gains the teams make irrelevant. That's why you have 38 cars running around Martinsville and Bristol at the same speed and nobody can pass. Have you actually been watching the races? New tires, old tires, great drivers, mediocre drivers, great teams, average teams, it makes no damn difference. They're all running the same speed and can't go anywhere. Dale Jr. has said more than once that if you had a goal of great short track racing, this wheel and tire combo would be the LAST thing you would do.