The all-wheel drive 911 GTS models combine high power output with optimum transmission of torque. Porsche Traction Management (PTM), the active all-wheel drive system, helps to ensure that the distribution of drive force is purposefully adapted to all kinds of road and weather conditions. The electronically controlled and fully variable multi-plate clutch distributes drive force between the permanently driven rear axle and the front axle even faster and more precisely than ever before. Sensors are used to collect a range of data, including the rotational speed of all four wheels, the lateral and longitudinal acceleration of the car and the current steering angle. In this way, PTM, working in conjunction with Porsche Stability Management (PSM), reliably provides better-than average traction and therefore excellent pulling power – particularly at the limits of sporty performance.