Technical data - 911 Carrera 4

BRAKE SYSTEM TECHNICAL DATA - 911 CARRERA 4

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 ⁽¹⁾

Brake booster (vacuum)

10 inch

Boost ratio

3,85

Brake master cylinder

front

23.81 mm

rear

23.81 mm

Stroke

18/18 mm

Brake proportioning control ⁽²⁾

EBV ⁽²⁾

Brake discs

front

318 mm

rear

299 mm

Effective brake discs

front

261.8 mm

rear

247.4 mm

Piston in brake caliper

front

2 x 40 + 2 x 36 mm

rear

2 x 30 + 2 x 28 mm

Brake pad area

front

254 cm ²

rear

196 cm ²

Total brake pad area

450 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!