Sierra 2500 4WD V8-6.0L (2008)
Brake Rotor/Disc: Specifications
Front Brakes JF3, JF7
Rotor Discard Thickness* .................................................................................................................................................................... 28.0 mm (1.10 in)
Rotor Minimum Allowable Thickness After Refinish .......................................................................................................................... 28.0 mm (1.10 in)
Rotor Thickness (new) ....................................................................................................................................................................... 30.0 mm (1.181 in)
Rotor Maximum Allowable Lateral Runout ....................................................................................................................................... 0.05 mm (0.002 in)
Rotor Maximum Allowable Scoring ................................................................................................................................................... 1.50 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation ............................................................................................................................. 0.025 mm (0.001 in)
Front Brakes JD9, JH6, JH7
Rotor Discard Thickness* ................................................................................................................................................................ 36.50 mm (1.437 in)
Rotor Minimum Allowable Thickness After Refinish ........................................................................................................................ 37.0 mm (1.457 in)
Rotor Thickness (new) ....................................................................................................................................................................... 38.0 mm (1.496 in)
Rotor Maximum Allowable Lateral Runout ....................................................................................................................................... 0.13 mm (0.005 in)
Rotor Maximum Allowable Scoring ................................................................................................................................................... 1.50 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation ............................................................................................................................. 0.025 mm (0.001 in)
Rear Brakes JD9
Rotor Discard Thickness* .................................................................................................................................................................. 18.0 mm (0.709 in)
Rotor Minimum Allowable Thickness After Refinish ...................................................................................................................... 18.5 mm (0.7282 in)
Rotor Thickness (new) 20.0 mm (0.787 in)
Rotor Maximum Allowable Lateral Runout ....................................................................................................................................... 0.25 mm (0.010 in)
Rotor Maximum Allowable Scoring ................................................................................................................................................... 1.50 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation ........................................................................................................................... 0.009 mm (0.0004 in)
Rear Brakes JH6
Rotor Discard Thickness* .................................................................................................................................................................. 27.5 mm (1.083 in)
Rotor Minimum Allowable Thickness After Refinish ........................................................................................................................ 28.0 mm (1.102 in)
Rotor Thickness (new) ....................................................................................................................................................................... 30.0 mm (1.181 in)
Rotor Maximum Allowable Lateral Runout 0.13 mm (0.005 in)
Rotor Maximum Allowable Scoring ................................................................................................................................................... 1.50 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation ............................................................................................................................. 0.025 mm (0.001 in)
Rear Brakes JH7
Rotor Discard Thickness* .................................................................................................................................................................. 28.5 mm (1.122 in)
Rotor Minimum Allowable Thickness After Refinish ........................................................................................................................ 29.0 mm (1.142 in)
Rotor Thickness (new) ....................................................................................................................................................................... 30.0 mm (1.181 in)
Rotor Maximum Allowable Lateral Runout ....................................................................................................................................... 0.13 mm (0.005 in)
Rotor Maximum Allowable Scoring ................................................................................................................................................... 1.50 mm (0.059 in)
Rotor Maximum Allowable Thickness Variation ............................................................................................................................. 0.025 mm (0.001 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 specifications.