Brake Rotor Surface And Wear Inspection
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the tire and wheel assemblies and retain the brake rotors using wheel lug nuts. If the inboard friction surface of the brake rotor is not accessible, reposition and support the caliper with the brake pads. See FRONT BRAKE PADS under REMOVAL & INSTALLATION.
- Clean the braking (friction) surfaces of the brake rotor with denatured alcohol or an equivalent approved brake cleaner.
- Inspect the friction surfaces of the brake rotor for the following braking surface conditions:
- Heavy rust and/or pitting. Light surface rust can be removed with an abrasive disc; heavy surface rust and/or pitting must be removed by refinishing the rotor.
- Cracks and/or heat spots.
- Excessive blueing discoloration.
- If the friction surfaces of the brake rotor exhibit one or more of the Braking Surface Conditions, the rotor requires refinishing or replacement.
- Using a micrometer calibrated in ten-thousands of an inch, measure and record the scoring depth of any grooves present on the rotor friction surfaces.
- Compare the groove scoring depth recorded to the vehicle specifications. See DISC BRAKE SPECIFICATIONS .
- If the brake rotor scoring depth exceeds the specification, or if an excessive amount of scoring is present, the rotor requires refinishing or replacement.