[RandyB]

Great info in this thread. I knew when I bought this car that I would not be willing to go to great lengths to reduce the weight, so with that in mind I began my weight savings crusade with the option boxes.

E92 instead of E90 - 20 lbs (wasn't considering E93)
CF roof instead of steel MR - 55lbs (11 lb roof + 44 lb MR)
6MT instead of M-DCT - ~44 lbs (?) don't remember the exact figure
Forged 19s instead of 18s - very minimal but rotational
No nav/idrive or packaged options - unknown

I did skip cloth seats for leather, and added EDC even though it added some weight. It also helped that I wanted the above items too, but would have been willing to add some weight if I didn't.

It would be nice to shave an additional 50-100 lbs and try to get closer the the E46 M3 weight. The right combo of wheels, brakes, exhaust and a light weight battery might get half of that but beyond those mods I doubt there is much else I would be willing to sacrifice.