NVH Noise Vibration Harshness
The early M3W's had the bevel box solidly mounted onto the chassis, following complaints about noise from the bevel box MMC mounted the bevel box on a sub frame which in turn was fitted to the chassis with metalastic bushes. This was done in an attempt to isolate the bevel box from the chassis. My 2013 car had this upgrade and it made negligible difference to the noise.
