Porsche 911 Turbo S Stability Management – Video

Porsche Stability Management (PSM) is fitted as standard. This system automatically maintains stability and traction even at the limits of dynamic driving performance. Sensors continuously monitor the direction, speed, yaw velocity and lateral acceleration of the car. Using this information, PSM is able to calculate the actual direction of travel at any given moment. If the car begins to oversteer or understeer, PSM applies selective braking on individual wheels in order to restore stability.

When accelerating on wet or low-grip road surfaces, PSM improves traction – as well as agility, control and safety – using the automatic brake differential (ABD) and anti-slip regulation (ASR). Integrated ABS is designed to minimise braking distances.

Want an even sportier drive? Then you can switch off PSM. For your safety, however, PSM remains set to intervene if the vehicle is braked and ABS assistance is required. ABS and ABD remain permanently enabled.

Also included with PSM are engine drag torque control (EDTC), the precharging of the brake system and brake assist. If you suddenly release the accelerator pedal, PSM automatically prepares for your next action: the braking system is precharged so that the brake pads are already in light contact with the brake discs. Maximum braking power is therefore achieved much sooner. Brake assist detects a panic braking situation and generates the brake pressure required for maximum deceleration.

In brief: PSM increases driving stability and safety as well as the agility you have come to expect from a Porsche.