Note: The brake disc thickness limit is indicated on the disc casting. Permissible scratch depth 1.5 mm.
Brake disc thickness
Front brake JC3/JC4/JH2 (GMT800):
- minimum 27.5 mm
- nominal 28.0 mm
- new 29.0 mm
- runout 0.13 mm
Front brake JD9 (GMT900):
- minimum 27.5 mm
- nominal 28.0 mm
- new 30.0 mm
- runout 0.05 mm
Front brake JD9 (GMT900):
- minimum 27.5 mm
- nominal 28.0 mm
- new 30.0 mm
- runout 0.05 mm
Front brake JH6 (GMT900/800):
- minimum 36.5 mm
- nominal 37.0 mm
- new 38.0 mm
- runout 0.13 mm
Rear brake JC4/JH2 (GMT800):
- minimum 28.5 mm
- nominal 29.0 mm
- new 30.0 mm
- runout 0.25 mm
Rear brake JD9 (GMT900):
- minimum 18.0 mm
- nominal 18.5 mm
- new 20.0 mm
- runout 0.25 mm
Rear brake JH6 (GMT900/800):
- minimum 27.5 mm
- nominal 28.0 mm
- new (GMT900) 30.0 mm
- new (GMT800) 29.0 mm
- runout 0.13 mm