Join Date: Dec 2016
Location: Flinders island
Rep Power: 1
Found this. Some talk about brake squeal.
Most brake pads use some sort of shim or spring to stop the pad from oscillating,aka making noise. What generally causes the noise is a small amount of movement by the pad at a very high frequency. Manufacturers eliminate this with shims,springs or a soft material that acts as a dampener. It is possible that one of these has failed from time,use or enviromental exposure. Another possibility is the pads are contaminated with crap splashed up from the road. Or crap from bike. Also the pad material is a blend or compounds that offer different traits in terms of wear,stopping power,noise etc. You may have a pad in which the material was not blended evenly and you are encountering hard spots that is causing the squeal. I think pads can be removed and cleaned somehow?