Either way, whether it’s two or four doors or a coupe or a sedan, these vehicles share similar characteristics. In the end, we’re looking at a difference of one seat. Really, you can’t go wrong with either car.
It is ALSO about if the LB diff between coupe and sedan on 335 is 22lbs, then if the M3 coupe has a carbon roof, then shouldn't the LB diff on M3 coupe vs sedan be GREATER than the LB diff on 335 (no carbon roof on coupe)?!