1 Are you experiencing a noisy rear wheel/brake? Thu May 24, 2012 6:45 am
browe58
active member
if you're hearing noise from your rear wheel and it goes away if you hit the brakes and you know your pads and caliper are fine, chances are you're missing the 2mm shim that goes betw the wheel & final drive. my bike was pulling to the right and i was hearing noise from the rear brake. rick from australia suggested i check to see if the shim was missing. sure enough it was. i researched the shim pros & cons and found that some riders and dealers have intentionally removed the shim to fix or minimize the pulling to the right (pttr) problem. it didn't fix my pttr but actaully made it worse. i also learned that if you remove the shim the rear disc/rotor may be off centered in the caliper resulting in the brake noise. in my case, putting the shim back where the bmw engineers intended it to go minimized the pttr and got rid of the rear brake noise. just wanted to pass that on. peace.