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Home >> GMC >> 2023 >> Hummer EV Edition 1 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes >> Specifications >> Disc Brake Component Specifications

Disc Brake Component Specifications

Application Specification
Metric English
Front Brakes 
  • Rotor Discard Thickness*
38.5 mm 1.516 in
  • Rotor Maximum Allowable Scoring
1.50 mm 0.059 in
  • Rotor Minimum Allowable Thickness After Refinish
39.0 mm 1.540 in
Rear Brakes 
  • Rotor Discard Thickness*
18.5 mm 0.728 in
  • Rotor Maximum Allowable Scoring
1.50 mm 0.059 in
  • Rotor Minimum Allowable Thickness After Refinish
19.0 mm 0.750 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.