Technical Data For 911 C2/C4 and 911 C2S/C4S - PCCB Brakes (Option)
Operating brake (foot brake):
- Dual-circuit brake system with brake-circuit division per axle
- Internally ventilated and perforated PCCB brake discs on front and rear axle
- Six-piston fixed calliper on front axle and four-piston fixed calliper on rear axle
- The brake callipers are painted yellow for visual differentiation
- Standard Porsche Stability Management (PSM 9.0)
| Location | Description | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Brake booster diameter (vacuum) | C2/C2S/C4/C4S | Tandem/diameter | 8/9 Zoll | ||
| Brake booster transmission ratio (i) | C2/C2S/C4/C4S | Factor | 5.5 | ||
| Diameter of brake master cylinder, front/rear | C2/C2S/C4/C4S | Diameter | 26.99/26.99 mm | ||
| Brake master cylinder stroke, front/rear | C2/C2S/C4/C4S | Measured value | 24.0/12.0 mm | ||
| Brake disc diameter, front | C2/C2S/C4/C4S | Diameter | 350 mm | ||
| Brake disc diameter, rear | C2/C2S/C4/C4S | Diameter | 350 mm | ||
| Effective brake disc diameter, front | C2/C2S/C4/C4S | Diameter | 286.6 mm | ||
| Effective brake disc diameter, rear | C2/C2S/C4/C4S | Diameter | 294 mm | ||
| Piston diameter in six-piston brake calliper, front | C2/C2S/C4/C4S | Diameter | 2 x 34 mm | ||
| Piston diameter in six-piston brake calliper, front | C2/C2S/C4/C4S | Diameter | 2 x 32 mm | ||
| Piston diameter in six-piston brake calliper, front | C2/C2S/C4/C4S | Diameter | 2 x 30 mm | ||
| Piston diameter in four-piston brake calliper, rear | C2/C2S/C4/C4S | Diameter | 4 x 32 mm | ||
| Effective brake pad area, front | C2/C2S/C4/C4S | Area | 424 cm2 | ||
| Effective brake pad area, rear | C2/C2S/C4/C4S | Area | 252 cm2 | ||
| Total brake pad area | C2/C2S/C4/C4S | Area | 676 cm2 |