Brake Rotor Refinishing (J55)
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Refer to Brake Dust Warning
.
The disc brake rotors are coated with a corrosion inhibitor and must not be refinished. The disc brake rotors do not require replacement as part of routine brake system service.
Do not replace disc brake rotors in an attempt to correct the following conditions:
- Brake system noise - squeal, growl, groan
- Uneven and/or premature disc brake pad wear
- Superficial or cosmetic corrosion/rust of the disc brake rotor friction surface
- Scoring of the disc brake rotor friction surface less than the maximum allowable specification
- Disc brake rotors should only be replaced if one or more of the following conditions exist:
- Thickness variation in excess of the maximum allowable specification
- Excessive corrosion/rust and/or pitting
- Cracks and/or heat spots
- Scoring of the disc brake rotor surface in excess of the maximum allowable specification
- Disc brake rotors may need to be replaced as part of the process for correcting brake rotor assembled lateral runout (LRO) that exceeds the maximum allowable specification. Refer to Brake Rotor Assembled Lateral Runout Correction .
- If at any time the disc brake rotor exceeds the discard thickness, the brake rotor must be replaced.