Technical Data - 911 Turbo/GT3/GT3 RS
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
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.
- Six-piston monobloc calliper on front axle and four-piston calliper on rear axle.
- The brake callipers are painted red for visual differentiation.
- Porsche Stability Management (PSM 8.0) on the 911 Turbo (as standard).
- Traction Control (TC) on the 911 GT3/911 GT3 RS (as standard) up to 2009 model. As of 2010 model, PSM (Porsche Stability Management) with sporty setup can be switched off completely in two steps.
| Location | Description | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Brake booster (vacuum) | All (Turbo, GT3/GT3 RS) | Tandem/diameter | 9 inches | ||
| Brake booster transmission ratio (i) | Turbo | Factor | 5.5 | ||
| Brake booster transmission ratio (i) | GT3/GT3 RS | Factor | 3.5 | ||
| Diameter of brake master cylinder, front/rear | All | Diameter | 26.99/26.99 mm | ||
| Brake master cylinder stroke, front/rear | All | Dimension | 20.5/15.5 mm | ||
| Brake disc diameter, front | Diameter | 350 mm | |||
| Brake disc diameter, front | GT3 as of 2010 model | Diameter | 380 mm | ||
| Brake disc diameter, rear | Diameter | 350 mm | |||
| Effective brake disc diameter, front | Diameter | 284 mm | |||
| Effective brake disc diameter, front | GT3 as of 2010 model | Diameter | 315.8 mm | ||
| Effective brake disc diameter, rear | Diameter | 292 mm | |||
| Piston diameter in six-piston brake calliper, front | Turbo and GT3/GT3 RS up to 2009 model | Diameter | 2 x 38/2 x 32/2 x 28 mm | ||
| Piston diameter in six-piston brake calliper, front | GT3 as of 2010 model | Diameter | 2 x 32/2 x 30/2 x 28 mm | ||
| Piston diameter in four-piston brake calliper, rear | All | Diameter | 4 x 34 mm | ||
| Effective brake pad area, front | Area | 448 cm2 | |||
| Effective brake pad area, front | GT3 as of 2010 model | Area | 428 cm2 | ||
| Effective brake pad area, rear | Area | 248 cm2 | |||
| Total brake pad area | Area | 696 cm2 | |||
| Total brake pad area | GT3 as of 2010 model | Area | 676 cm2 |