Originally Posted by Epacy
This has been discussed many times. You are comparing two different ways that the weight is calculated.
Official BMW figures:
Car . . . . . . .EU figure . . . . USA
E46 M3 . . . . 1570 kg .. . . 3415 lbs
E92 M3 . . . . 1655 kg . . . . . ?
E92 335i . . . 1600 kg . . . . 3571 lbs
I thought for sure we knew that the M3 was lighter than the 335i. With these numbers it does not seem possible that M3 will weight less. However, like Steved mentioned he won't be confident until he sees the car on a scale. Case and point Road and Track weighed their 335i at a whooping 3635
curb weight (that's w/o a driver). Too much variation in standards and specs/options to make an absolutely concrete conclusion.
See this good post
as well for more weight and weight standards.