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Why Your Bicycle Brakes Squeal and How to Fix Them

Squealing brakes can be embarrassing and frustrating. Although some brake noise is harmless, persistent squealing may indicate contamination, worn pads, misalignment, or vibration.

Common Causes

Rim brakes can squeal when pads contact the rim at an incorrect angle. Disc brakes may make noise when the pads or rotor become contaminated with oil or other substances.

Worn pads, damaged rotors, and loose components may also contribute to the problem.

Steps to Reduce Brake Noise

Inspect the pads and braking surfaces for contamination or excessive wear. For rim brakes, check pad alignment and ensure that the pads contact the intended braking track.

For disc brakes, follow the manufacturer's cleaning procedure for the rotor and check the pad condition. Contaminated pads may need replacement rather than cleaning.

Do not apply general-purpose oil, grease, or inappropriate cleaners to braking surfaces. Brake adjustment and bedding-in procedures vary by brake type.

If braking power is reduced, the rotor is damaged, or the noise persists, seek professional servicing.

Prevention

Keep lubricants away from brakes, clean braking surfaces appropriately, and inspect pads regularly.

Conclusion: Quiet brakes are useful, but reliable stopping power is more important than sound. Always prioritize braking performance and safety.


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