Brakes and Traction Control: Specifications

Front Brake Rotors
Rotor Discard Thickness * RPO Codes L 26, L 32 30.7 mm (1.21 inch)
Rotor Discard Thickness *RPO Code LS 4 29.0 mm (1.14 inch)
Rotor Maximum Allowable Lateral Runout RPO Code L 26, L 32 0.060 mm (0.002 inch)
Rotor Maximum Allowable Lateral Runout RPO Code LS 4 0.030 mm (0.0012 inch)
Rotor Maximum Scoring 1.50 mm (0.059 inch)
Rotor Maximum Allowable Thickness Variation
RPO Codes L 26, L 32 0.025 mm (0.001 inch)
RPO Code LS 4 0.006 mm (0.00024 inch)
Rotor Minimum Allowable Thickness After Refinishing
RPO Codes L 26, L 32 31.0 mm (1.22 inch)
RPO Code LS 4 30.0 mm (1.18 inch)
Rotor Thickness-NEW
RPO Codes L 26, L 32 32.2 mm (1.27 inch)
RPO Code LS 4 32.0 mm 1.26 (inch)
Rear Brake Rotors
Rotor Discard Thickness *RPO Codes L 26, L 32 12.5 mm (0.49 inch)
Rotor Discard Thickness * RPO Code LS 4 23.0 mm (0.91 inch)
Rotor Maximum Allowable Lateral Runout
RPO Codes L 26, L 32 0.05 mm (0.002 inch)
RPO Codes L 26, L 32 0.0305 mm (0.0012 inch)
Rotor Maximum Scoring 1.50 mm (0.059 inch)
Rotor Maximum Allowable Thickness Variation
RPO Codes L 26, L 32 0.02 mm (0.001 inch)
RPO Code LS 4 0.006 mm (0.00024 inch)
Rotor Minimum Thickness After Refinishing
RPO Codes L 26, L 32 12.9 mm (0.51 inch)
RPO Code LS 4 24.0 mm (0.945 inch)
Rotor Thickness-NEW
RPO Codes L 26, L 32 14.00 mm (0.55 inch)
RPO Codes LS 4 26.00 mm (1.024 inch)

* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the
rotor, replace any rotor that does not meet the minimum thickness specification.