Procedure

Spin the wheel

and watch the rotor pass through the brake caliper.

Identify where the rotor rubs

— look for which side of the caliper it touches and at what part of the rotation.

Mark the bent section

with a marker or tape on the rim adjacent to it (so you can find it once you stop spinning).

Place the truing fork

on the bent section, with the rotor in the slot of the tool.

Bend gently

in the opposite direction of the deflection. Small movements — a few millimeters of bend at a time.

Spin and re-check.

Repeat until the rotor passes cleanly

through the caliper without rubbing.

For severe bends:

sometimes a rotor cannot be saved. If you can see a sharp crease or the rotor wobbles by more than 2 mm at the edge, replace it. > Touch only the rotor's brake track with the truing fork — keep your fingers off the brake surfaces (skin oils contaminate them). ---

A bent rotor rubs the pads even with the lever released, creating drag and noise.

Procedure #

Spin the wheel and watch the rotor pass through the brake caliper.
Identify where the rotor rubs — look for which side of the caliper it touches and at what part of the rotation.
Mark the bent section with a marker or tape on the rim adjacent to it (so you can find it once you stop spinning).
Place the truing fork on the bent section, with the rotor in the slot of the tool.
Bend gently in the opposite direction of the deflection. Small movements — a few millimeters of bend at a time.
Spin and re-check.
Repeat until the rotor passes cleanly through the caliper without rubbing.
For severe bends: sometimes a rotor cannot be saved. If you can see a sharp crease or the rotor wobbles by more than 2 mm at the edge, replace it.

Touch only the rotor’s brake track with the truing fork — keep your fingers off the brake surfaces (skin oils contaminate them).

Rotor Truing

Tools