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Hydraulic System, Brakes > < Brakes - Pedal Pulsation/Vibration
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Brake Rotor/Disc: Specifications

Brake Rotor Specifications

Front 

Diameter:

911 Carrera 2, Speedster & Carrera RS America ...........................................................................................................................................  298 mm
911 Carrera 2 Turbo-Look, America Roadster & Carrera RS ........................................................................................................................  322 mm
911 Carrera 4 & Carrera 4 Turbo-Look ..........................................................................................................................................................  298 mm
911 Turbo .......................................................................................................................................................................................................  322 mm

Minimum thickness

New:

911 Carrera 2, Speedster & Carrera RS America ........................................................................................................................................ 28 mm
911 Carrera 2 Turbo-Look, America Roadster & Carrera RS ....................................................................................................................  32 mm
911 Carrera 4 & Carrera 4 Turbo-Look ....................................................................................................................................................... 28 mm
911 Turbo .................................................................................................................................................................................................... 32 mm

Wear limit:

911 Carrera 2, Speedster & Carrera RS America ........................................................................................................................................ 26 mm
911 Carrera 2 Turbo-Look, America Roadster & Carrera RS ....................................................................................................................  30 mm
911 Carrera 4 & Carrera 4 Turbo-Look ....................................................................................................................................................... 26 mm
911 Turbo .................................................................................................................................................................................................... 30 mm

Thickness variation: ........................................................................................................................................................................................  0.02mm

Maximum lateral runout:

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

Rear

Diameter:

911 Carrera 2, Speedster & Carrera RS America ...........................................................................................................................................  299 mm
911 Carrera 2 Turbo-Look, America Roadster & Carrera RS ........................................................................................................................  299 mm
911 Carrera 4 & Carrera 4 Turbo-Look ..........................................................................................................................................................  299 mm
911 Turbo .......................................................................................................................................................................................................  299 mm

Minimum thickness

New:

911 Carrera 2, Speedster & Carrera RS America ........................................................................................................................................ 24 mm
911 Carrera 2 Turbo-Look & America Roadster ........................................................................................................................................  28 mm
911 Carrera RS ...........................................................................................................................................................................................  24 mm
911 Carrera 4 ............................................................................................................................................................................................... 24 mm
911 Carrera 4 Turbo-Look ........................................................................................................................................................................... 28 mm
911 Turbo .................................................................................................................................................................................................... 28 mm

Wear limit:

911 Carrera 2, Speedster & Carrera RS America ........................................................................................................................................ 22 mm
911 Carrera 2 Turbo-Look & America Roadster ........................................................................................................................................  26 mm
911 Carrera RS ...........................................................................................................................................................................................  22 mm
911 Carrera 4 ............................................................................................................................................................................................... 22 mm
911 Carrera 4 Turbo-Look ........................................................................................................................................................................... 26 mm
911 Turbo .................................................................................................................................................................................................... 26 mm

Thickness variation: ........................................................................................................................................................................................  0.02mm

Maximum lateral runout:

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

Hydraulic System, Brakes > < Brakes - Pedal Pulsation/Vibration