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Home >> Porsche >> 2016 >> 911 Turbo, 2D Convertible >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> 46 Brakes - Brake Mechanism -- 911 CARRERA (991) >> WM 4600TW Technical Data/Brake Wear Limits - All 911 CARRERA Models (Except CARRERA "Edition", CARRERA Cabriolet "Edition", Turbo, Turbo S, CARRERA 4 "Edition", Turbo CABRIO, Turbo S CABRIO, CARRERA 4 Cabriolet "Edition", Gt3, Gt3 RS) >> Technical Data/Brake Wear Limits - 911 C2/C4 And 911 C2S/C4S >> Technical Data - 911 Carrera/911 Carrera 4 >> Parking Brake

Parking Brake

Location Description Type Basic value Tolerance 1 Tolerance 2
Brake booster (vacuum) C2/C4 Tandem/diameter 8/9 Zoll    
Brake booster transmission ratio (i) C2/C4 Factor 5.5    
Diameter of brake master cylinder, front/rear C2/C4 Diameter 26.99/26.99 mm    
Brake master cylinder stroke, front/rear C2/C4 Measured value 24/12 mm    
Brake disc diameter, front C2/C4 Diameter 330 mm    
Brake disc diameter, rear C2/C4 Diameter 330 mm    
Effective brake disc diameter, front C2/C4 Diameter 277.8 mm    
Effective brake disc diameter, rear C2/C4 Diameter 274.6 mm    
Piston diameter in four-piston brake calliper, front C2/C4 Diameter 4 x 38 mm    
Piston diameter in four-piston brake calliper, rear C2/C4 Diameter 4 x 32 mm    
Effective brake pad area, front C2/C4 Area 286 cm2    
Effective brake pad area, rear C2/C4 Area 200 cm2    
Total brake pad area C2/C4 Area 486 cm2