The sedan chassis was significantly stiffer through the E46 generation. BMW is claiming, however, that the coupe has a slight edge this time around. Of course, they also claim that the coupe is measureably faster, which is absurd given that the weight difference between the two basically equates to two or three gallons of gas.

Regardless, the sedan will likely continue to be the race platform of choice. They're a bit cheaper and more practical to strip down and they have more interior clearance for structural reinforcement/roll cages.

 

The sedan chassis was significantly stiffer through the E46 generation. BMW is claiming, however, that the coupe has a slight edge this time around. Of course, they also claim that the coupe is measureably faster, which is absurd given that the weight difference between the two basically equates to two or three gallons of gas.

Regardless, the sedan will likely continue to be the race platform of choice. They're a bit cheaper and more practical to strip down and they have more interior clearance for structural reinforcement/roll cages.

Good info. Better sig .

I've been looking at E36 M3's and someone mentioned to me that the sedan was a lot stiffer. It's great to hear a second unrelated confirmation.

 

Two big doors - Four small doors

 

Does the B piller in the sedan make a difference?

 

Economics .. a base sedan is cheaper and probably easier to fabricate in roll cages and such.

 

Not to mention the sedan form factor typically precedes the coupe by a year or so.