I tried to figure out the absolute maximum force that a car can create. But the numbers I got are obviously wrong. I started by trying it on the http://www.supercars.net/cars/1177.html" [Broken]. Torque is 649.4 Nm. First gear is 3.23. Then there's a "final drive ratio" of 2.37. I thought that this is first gear multiplied by the rear differential, and should be around 10. So I decided that this is the rear differential, and got a product of 7.6551. So the torque at the axle is 649.4*7.6551 = 4971.22194. Given a tire diameter of .315*.9 m + 17 in = 0.7153 meters, this means a force of 4971.22194 / 0.7153 = 6949.84194 N. But! "(60 mph) / gravity on earth = 2.73512362 seconds" - Google. F1 has a 0-60 of 3.2, giving 0.854726131 g. That by the mass of 1140 gives a force of 974.38779 kgf, or 9555.48002 N So, the theoretical force is 6949.84194, and the real is at least 9555.48002. Probably more, because the car can't be at peak torque the whole time. That is impossible. What did I do wrong? My guess is that it has to do with the final drive thing. Or maybe I left something out, like bore and stroke. I don't know what I need to do with them.