ION L4-2.4L (2007)
Brake Rotor/Disc: 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.