[JHZR2]

My 2011 135i has original brakes. While under warranty, I noted to the dealer that the rear right brake sometimes made a squealing noise under light pressure. They (added?) chamfered the pad and put it back together. Now, maybe 10k later, it’s happening again.

Has anyone else experienced this? Best explained as only happening when cold with light pressure under initial contact. Under hard braking, multiple braking instances, etc., it doesn’t occur.

Is a re-chamfer if the pads really appropriate or is another approach recommended? If it was lubrication, Id think the others would also be noisy?

For pad removal and re-installation, are there any bolts that are use once and replace?

Thanks!