Technical Data - Boxster/Cayman
Operating brake (foot brake):
- Dual-circuit brake system with brake-circuit division per axle.
- Internally ventilated and perforated grey cast-iron brake discs on front and rear axle.
- Four-piston monobloc calliper on front and rear axle.
- Standard Porsche Stability Management (PSM 8.0).
| Location | Description | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Brake booster (vacuum) | Diameter | 10 Zoll | |||
| Brake booster transmission ratio (i) | Ratio | 4.5 | |||
| Diameter of brake master cylinder, front/rear | Diameter | 23.81/23.81 mm | |||
| Brake master cylinder stroke, front/rear | Measured value | 20.5/15.5 mm | |||
| Brake disc diameter, front | Diameter | 298 mm | |||
| Brake disc diameter, rear | Diameter | 299 mm | |||
| Effective brake disc diameter, front | Diameter | 250 mm | |||
| Effective brake disc diameter, rear | Diameter | 247.6 mm | |||
| Piston diameter in four-piston brake calliper, front | 2x | Diameter | 40 mm | ||
| Piston diameter in four-piston brake calliper, front | 2x | Diameter | 36 mm | ||
| Piston diameter in four-piston brake calliper, rear | 2x | Diameter | 30 mm | ||
| Piston diameter in four-piston brake calliper, rear | 2x | Diameter | 28 mm | ||
| Effective brake pad area, front | Area | 214 cm2 | |||
| Effective brake pad area, rear | Area | 192 cm2 | |||
| Total brake pad area | Area | 406 cm2 |