[doughboy]

Originally Posted by Insider

Both. 430 torque at the wheels, which is over 500 at the engine.

In which gear? with what diff? You can't just take a % off crank torque to give wheel torque.

In first gear, lets say 3:1, plus the diff at say 2:1 (guesses), that means that 500nm at the crank will be 3000nm!!! at the wheel hub (- losses)

So I would say its not the relatively low crank torque (input torque) which is the limit on a transmission, but the 'box output shaft torque in lower gears and the diff rating.

Maybe thats why they limit engine torque output in 1st and 2nd gears?

[jhbodle]

According to BMW Car magazine, the 335i manual gearbox is the one they use in the US M5, and that has 384 lb/ft torque.

I do know from first hand experience that the 335i auto gearbox is rated at 450nm (336lb/ft) torque - it's surely no coincidence that the upcoming BMW Performance tuning kit bumps the torque up to exactly that figure.