Just installed these prototype Millway camber plates on my F31 X-Drive... they use the factory plastic bearings just as their standard camber plates, but these prototypes added polyurethane bushings to address the chatter produced by typical camber plates.
Bearing (pun intended) in mind that I have zero experience with camber plates, my initial impression is that there is very faint chatter that can be heard at low speed, but at speeds over 15mph - nothing.
More to follow in another post:
https://f30.bimmerpost.com/forums/sh...7&postcount=22