Disc Brake Component Specifications

Front Brakes J41/JM4
Brake Rotor Diameter 256.00 mm 10.079 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.