[steve86]

Pull out your Newtonian partial equations manual and figure out how much weight you would need to remove to give a car a one-centimeter advantage accelerating out of turn four to the finish line. The answer might be in grams. It all counts.

[discostu]

NASCAR vehicles are aerodynamically designed to have more down force that a fully laiden 747 sitting on the tarmac, grams won't make a difference, if grams made a difference professional drivers would be constantly trying to lose weight. You don't hear about guys taking pre-race enemas to get rid of a few extra grams do you? You know why, because grams don't make a difference, neither with a couple dozen pounds.