Brake Rotor/Disc

Front Brakes J41/JM4
Brake Pad Lining Minimum Thickness 1.0 mm (0.039 in)
Brake Pad Lining Thickness - New 12.0 mm (0.472 in)
Brake Rotor Diameter, 4 Stud J41/JM4 256.00 mm (10.079 in)
Brake Rotor Diameter, 5 Stud JM4 280.00 mm (11.024 in)
Brake Rotor Discard Thickness* 22.0 mm (0.87 in)
Brake Rotor Maximum Allowable Assembled Lateral Runout 0.06 mm (0.002 in)
Brake Rotor Maximum Allowable Scoring 1.50 mm (0.059 in)
Brake Rotor Maximum Allowable Thickness Variation 0.025 mm (0.001 in)
Brake Rotor Minimum Allowable Thickness After Refinish 22.75 mm (0.896 in)
Brake Rotor Thickness - New 23.69 mm (0.933 in)

Front Brakes JL9
Brake Rotor Diameter 296.00 mm (11.653 in)
Brake Rotor Discard Thickness* 22.8 mm (0.898 in)
Brake Rotor Maximum Allowable Assembled Lateral Runout 0.06 mm (0.002 in)
Brake Rotor Maximum Allowable Scoring 1.50 mm (0.059 in)
Brake Rotor Maximum Allowable Thickness Variation 0.025 mm (0.001 in)
Brake Rotor Minimum Allowable Thickness After Refinish 23.0 mm (0.906 in)
Brake Rotor Thickness - New 26.0 mm (1.023 in)

Rear Brakes JL9
Brake Rotor Diameter 270.0 mm (10.630 in)
Brake Rotor Discard Thickness* 11.8 mm (0.465 in)
Brake Rotor Maximum Allowable Assembled Lateral Runout 0.06 mm (0.002 in)
Brake Rotor Maximum Allowable Scoring 1.50 mm (0.059 in)
Brake Rotor Maximum Allowable Thickness Variation 0.025 mm (0.001 in)
Brake Rotor Minimum Allowable Thickness After Refinish 12.0 mm (0.472 in)
Brake Rotor Thickness - New 14.0 mm (0.551 in)

* 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.