Elms subframe crack

[mattCSLnut]

Originally Posted by dave wilkinson

like i've just said matt-

the new boot floor is stronger as have different part numbers and slightly different design. i've seen it with my own eyes. for bmw to admit this tho will mean there admitting there's a fault and would have to recall all e46 m3's.

the foam injection is NOT i cue is a prevention! there's a few e46's out there that have had the injection and still cracked later on.

Are you suggesting the guys @ Elms are spreading misinformation ?
Highly unlikely as Elms are the busiest and most experienced BMW main dealer doing this repair at the moment.
Just because a BMW car part has a different part number doesn't mean it's different, improved or otherwise.
Most car manufacturers (BMW included) change/supersede part numbers over the years. It's a common practice.
Maybe just maybe BMW are using a slightly thicker gauge steel for the replacement boot panels, the press pattern has to be the same to fit the rest of the old E46 chassis.