Technical data - 911 Carrera 4S

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

BRAKE SYSTEM TECHNICAL DATA - 911 CARRERA 4S

Designation

Notes, dimensions

Wear limit

Operating brake (foot brake)

Hydraulic dual-circuit brake system with front-axle / rear-axle brake circuit division. Vacuum brake booster, internally ventilated and perforated cast iron brake discs with four-piston monoblock fixed caliper at front and rear axles. ⁽¹⁾
The brake calipers are painted red for visual differentiation. ⁽¹⁾
PSM 5.7 ⁽¹⁾

Brake booster (vacuum)

10 inch

Boost ratio

3,85

Brake master cylinder

front

25.4 mm

rear

25.4 mm

Stroke

18/18 mm

Brake proportioning control ⁽²⁾

EBV ⁽²⁾

Brake discs

front

330 mm

rear

330 mm

Effective brake discs

front

267.8 mm

rear

271.2 mm

Piston in brake caliper

front

2 x 44 + 2 x 36 mm

rear

2 x 30 + 2 x 28 mm

Brake pad area

front

314 cm ²

rear

254 cm ²

Total brake pad area

568 cm ²

⁽¹⁾	Porsche Stability Management (PSM) standard with ABS, Traction Control (TC), ABD, MSR (engine drag torque control), FZR (vehicle regulator) and EBV (electronic brake distributor). Passive switching possibility for TC, FZR and MSR.

⁽²⁾	EBV = electronic brake distributor (brake proportioning control). As a result, no screw-in brake proportioning valves are required!