Originally Posted by bmwzimmer
Not possible. EVERY M car is about 200lbs heavier than the top of the line series car. Here's a few examples...
Z4 3.0is = 3000lbs, MZ4 = 3200-3300 lbs
550i = 3800 lbs, M5 = 4000lbs
E46 330 = 3200-3300, E46M3 = 3400lbs
Although the M models have some nice light weight materials, you need beefier suspension/brakes/wheels/LSD/Engine/Tranny and everything else I missed so it's going to be a couple hundred pounds heavier than the 335i so you're looking at a 3750-3800lb if history repeats....
Dont forget the seats and headliner.