Mountain Bike Disc Brakes Are Squeaking. It might be hot after a ride. The causes of noisy disc brakes are much the same as it is for rim brakes.
It's true that rim brakes can squeal but we reckon that disc brakes are worse offenders. A wheel that is not seated properly will be off-kilter and may rub. Almost all modern mountain bikes come equipped with disc brakes, and more and more road and commuter bikes now feature them.. without jerking or squeaking.
Squeaking bike disc brakes are a common problem experienced by bikers.
It makes lessening speed down the mountain bit simpler.
If yours do not, the problem may require more than just a cleaning. Often, people assume that this issue is specific to Avid brand of disc brakes. A fine-tuned mechanical disc brake for mountain bikes designed with a sturdy aluminum body for enhanced durability.