Cobalt L4-2.0L SC VIN P (2005)
Brake Rotor/Disc: Specifications
Front Brakes J41/JM4
Brake Rotor Diameter .................................................................................................................................................................... 256.00 mm (10.079 inch)
Brake Rotor Discard Thickness ............................................................................................................................................................. 22.0 mm (0.87 inch)
Brake Rotor Maximum Allowable Assembled Lateral Runout ............................................................................................................ 0.06 mm (0.002 inch)
Brake Rotor Maximum Allowable Scoring ......................................................................................................................................... 1.50 mm (0.059 inch)
Brake Rotor Maximum Allowable Thickness Variation .................................................................................................................... 0.025 mm (0.001 inch)
Brake Rotor Minimum Allowable Thickness After Refinish ............................................................................................................. 22.75 mm (0.896 inch)
Brake Rotor Thickness - New ............................................................................................................................................................ 23.69 mm (0.933 inch)
Front Brakes JL9
Brake Rotor Diameter .................................................................................................................................................................... 296.00 mm (11.653 inch)
Brake Rotor Discard Thickness ........................................................................................................................................................... 22.8 mm (0.898 inch)
Brake Rotor Maximum Allowable Assembled Lateral Runout ............................................................................................................ 0.06 mm (0.002 inch)
Brake Rotor Maximum Allowable Scoring ......................................................................................................................................... 1.50 mm (0.059 inch)
Brake Rotor Maximum Allowable Thickness Variation .................................................................................................................... 0.025 mm (0.001 inch)
Brake Rotor Minimum Allowable Thickness After Refinish ............................................................................................................... 23.0 mm (0.906 inch)
Brake Rotor Thickness - New .............................................................................................................................................................. 26.0 mm (1.023 inch)
Rear Brakes JL9
Brake Rotor Diameter ...................................................................................................................................................................... 270.0 mm (10.630 inch)
Brake Rotor Discard Thickness ........................................................................................................................................................... 11.8 mm (0.465 inch)
Brake Rotor Maximum Allowable Assembled Lateral Runout ............................................................................................................ 0.06 mm (0.002 inch)
Brake Rotor Maximum Allowable Scoring ......................................................................................................................................... 1.50 mm (0.059 inch)
Brake Rotor Maximum Allowable Thickness Variation .................................................................................................................... 0.025 mm (0.001 inch)
Brake Rotor Minimum Allowable Thickness After Refinish ............................................................................................................... 12.0 mm (0.472 inch)
Brake Rotor Thickness - New .............................................................................................................................................................. 14.0 mm (0.551 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.