Bonking Noise - United Bimmer Community

**beamer01** · 04-22-2012, 01:46 PM

Hi all this is my first post.so i hope i do it right.
I have a bonking noise at the rear end when going over bumps or rough road surfaces any help to fix it would be nice

BEAMER01

Big Evil · 04-24-2012, 11:12 AM

Lift it and look for loose exhaust mounts, you might have a bad center support bearing, I've also seen the rear sway bar slip out of its mounts.

DEATH2000 · 04-26-2012, 06:23 PM

Could also be a worn out Rear Shock Mount (RSM). Best way to find out is to get under the car and trying to find play in any of the components.

**328is** · 04-28-2012, 12:46 PM

can you tell which side of the vehicle its coming from? are the anti rattle clips on the brake calipers installed or the spare tire secured properly?

**beamer01** · 04-29-2012, 11:58 AM

Hi 328is
It is comming from the righthand side i have check the spare and brakes..

**3050rpm** · 04-29-2012, 09:29 PM

Also check rear trailing arm bushings. Replace in pairs.