Disc Rub

DISC RUB

Disc rub is when the brake rotor continuously or intermittently rubs against the brake pads inside the caliper, even when the brake lever is not engaged. It produces a persistent rubbing or ticking sound while riding and can slow the wheel rotation.

Common causes include a bent rotor, a misaligned caliper, or pad contamination. The fix usually involves re-centering the caliper over the rotor by loosening the caliper mounting bolts and gently repositioning it, then re-tightening while squeezing the brake lever.