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Z3 Rear Brake Rattle

kiboured
in BMW Z3 & Z4 Series Forum

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Along the way I have heard a great deal about Z3 rear brake rattle when going over bumps. I stripped the brakes several times but couldn't find the fault. I even took it to a BMW dealer and they couldn't give any advise.

I kept thinking this was an issue with the caliper but after stripping again last weekend I realised it's the hand brake cable where it enters the back of the hub. There are 2 issues about this. 1, the clips that hold the cable in place by the rear suspension break, an easy fix is a simple cable tie. The 2nd is the tension on the cable itself. To check this remove the handbrake gator (it just pops off), put the handbrake to its off position and check how much slack is on the cable. If loose adjust a little at a time and check again.

My brakes are now perfectly quiet and it only took a few minutes to resolve. I may work for other BMW's that share the same issue.

Rich

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