Porsche Workshop Service and Repair Manuals

Brake Rotor/Disc: Specifications

Brake Rotor Specifications

Front 

Diameter: ...........................................................................................................................................................................................................  282.5 mm
Minimum thickness

New: ................................................................................................................................................................................................................ 20.5 mm
Wear limit: ...................................................................................................................................................................................................... 18.5 mm
Thickness variation: ........................................................................................................................................................................................  0.02mm

Maximum lateral runout:

Brake disc ....................................................................................................................................................................................................... 0.05 mm
Brake disc - when installed ............................................................................................................................................................................... 0.1 mm

Rear

Diameter ...............................................................................................................................................................................................................  289 mm
Minimum thickness

New: ................................................................................................................................................................................................................... 20 mm
Wear limit: ...................................................................................................................................................................................................... 18.6 mm
Thickness variation: .......................................................................................................................................................................................  0.02 mm

Maximum lateral runout:

Brake disc ....................................................................................................................................................................................................... 0.05 mm
Brake disc - when installed ............................................................................................................................................................................... 0.1 mm