Originally Posted by Malek@MRF
This post has a lot of misinformation in it, and spreading of such is not in the best interest of this community.
The bolts are a major problem, as are the bushings and mounts.
The differential sustains damage AFTER the mounting hardware fails, this is why the low hanging heat sink gets damaged.
If you take apart an E9x M3 that has had this failure, it becomes painfully obvious what is going on.
Carry on gentlemen.
Care to comment why reputable CNC shops have invested time in the mounts and not the bolts, when the bolts are far easier to machine