Originally Posted by merritt
Plus since you mention the fact that while the E46 M3 and the 335i have similar outputs to the wheel but the difference gets larger when reported at the crank you can see right there where you can pick up some power to the wheels in the 335i. The 335i could benefit from a lighter flywheel, driveshaft, wheels, etc...
The crank numbers for the N54 are underrated. And your statement is backwards. The difference in crank vs wheel wold show that the M3 could benefit from a lighter drive train since the loss is greater from crank to wheel. Thats assuming that the crank numbers are accurate for the N54, which I doubt they are.