Porsche Workshop Service and Repair Manuals

Brake Rotor/Disc: Specifications

Brake Rotor Specifications

Front 

Diameter: ..............................................................................................................................................................................................................  304 mm
Minimum thickness

New: ................................................................................................................................................................................................................... 32 mm
Wear limit: ......................................................................................................................................................................................................... 30 mm
Thickness variation: ........................................................................................................................................................................................  0.02mm

Maximum lateral runout:

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

Rear

Diameter: ..............................................................................................................................................................................................................  299 mm
Minimum thickness

New: ................................................................................................................................................................................................................... 24 mm
Wear limit: ......................................................................................................................................................................................................... 22 mm
Thickness variation: .......................................................................................................................................................................................  0.02 mm

Maximum lateral runout:

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