Right lads, since my last ride yesterday my rear disc under light to medium braking makes a wierd groaning noise, and I can feel a bit of feedback in the frame when it happens. Sounds daft, but its kinda like the noise a ship makes when it sounds its foghorn (weird analogy I know). This doesn’t happen when I apply the brake fully, as in completely slamming the anchors on to lock the wheel up.
Generally the noise is simply a vibration that can be more felt than heard coming from the disc pads because on slower stops you don’t have the brakes applied fully which allows them to vibrate against the rotor surface.
BFG71 – Baking the pads is an attempt to remove or burn / boil out any contaminants that may have been absorbed by the brake pad material, such as oil, grease or cleaning products etc. This is an old motorcycling trick and can be very successful but has been known to affect the bond between friction material and the steel backing plate. Obviously this is not a good thing when braking, to see parts of your brakes flying past you as they fire out of the calliper as you attempt to slow down, (personal experience). 😯