Porsche Workshop Service and Repair Manuals

Brake Rotor/Disc: Specifications

Brake disc diameter, front

Diameter ...............................................................................................................................................................................................................   330 mm

Brake disc diameter, rear

Diameter ...............................................................................................................................................................................................................   330 mm

Effective brake disc diameter,front

Diameter ............................................................................................................................................................................................................   267.8 mm

Effective brake disc diameter, rear

Diameter ............................................................................................................................................................................................................   271.2 mm

Brake disc thickness, new (front)

Measured value ......................................................................................................................................................................................................   34 mm

Brake disc thickness, new (rear)

Measured value ......................................................................................................................................................................................................   28 mm

Minimum brake disc thickness after machining, front

Brake disc can only be reworked symmetrically, i.e. equally from both sides!

Measured value .............................................................................................................................................................................................   32.6 mm

Minimum brake disc thickness after machining, rear

Brake disc can only be reworked symmetrically, i.e. equally from both sides!
Measured value ...................................................................................................................................................................................................   26.6 mm

Brake disc wear limit, front

Measured value ...................................................................................................................................................................................................   32.0 mm

Brake disc wear limit, rear

Measured value ...................................................................................................................................................................................................   26.0 mm

Peak-to-valley surface roughness of brake disc after machining (max.)

Measured value .................................................................................................................................................................................................   0.006 mm

Thickness tolerance of brake discs (max.)

Measured value ...................................................................................................................................................................................................   0.02 mm

Lateral runout of brake disc (max.)

Measured value ...................................................................................................................................................................................................   0.03 mm

Lateral runout of wheel hub (max.)

Measured value ...................................................................................................................................................................................................   0.03 mm

Lateral runout of brake disc when installed (max.)

Measured value ...................................................................................................................................................................................................   0.06 mm

Brake disc diameter, front

Diameter ...............................................................................................................................................................................................................   350 mm

Brake disc diameter, rear

Diameter ...............................................................................................................................................................................................................   350 mm

Effective brake disc diameter, front

Diameter ............................................................................................................................................................................................................   284.8 mm

Effective brake disc diameter, rear

Diameter ...............................................................................................................................................................................................................   292 mm

Brake disc thickness, new (front)

Measured value ......................................................................................................................................................................................................   34 mm

Brake disc thickness, new (rear)
Measured value ..........................................................................................................................................................................................................   28 mm

Brake disc wear limit, front

Minimum brake disc thickness (wear limit) is stamped on the brake-disc chamber. Example: Min. Th.33.7 mm