All 911 models come fitted with Porsche Stability Management (PSM) as standard. PSM maintains stability 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 and initiates strategic braking of individual wheels to prevent you from deviating from your intended line.
Under acceleration on inconsistent surfaces, PSM improves traction using the automatic brake differential (ABD) and anti-slip regulation (ASR) functions. The result is a high level of driving stability and safety – and extraordinary agility at the same time.