New answers tagged hydraulic-disc-brake
Hydraulic brakes' pistons need to be cleaned "every couple of month". If not, the dirt soaks the brake fluid and contaminated the brake pads. Also, a dirty piston can get stuck and then doesn't work anymore.
i had this happen the bolts connecting the brakes to the frame were rubbing on the rotor.
Check the alignment of the rotor as it passes through the caliper. If it's closer to one pad than the other, try to realign the caliper so that it is centered around the rotor. Does the noise "fade in" as you accelerate? Does it get louder and louder as you go faster and faster? Or is there some critical speed at which it starts? Does it go away if ...
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