05-08-2007, 04:13 PM
you need the final drive train ratio, the tire size and the rpm, that will give you a good estimate, but this is only an estimate
there is tire ballooning, the real rpm's ot the engine, wind speed, too many veriables and you will only get a ball park figure at best
there is tire ballooning, the real rpm's ot the engine, wind speed, too many veriables and you will only get a ball park figure at best