PTM comprises of an active all-wheel drive system with an electronically variable, map-controlled multi-plate clutch, automatic brake differential (ABD) and anti-slip regulation (ASR).
The electronically controlled multi-plate clutch helps to ensure optimum distribution of force between the permanently driven rear axle and the front axle. The driving conditions are continuously monitored to enable the system to respond to a variety of situations. During cornering, the required level of engine torque is distributed to the front wheels to provide excellent lateral stability. The result: perfect distribution of drive torque at all times.
PTM on the Cayenne Diesel and Cayenne S E-Hybrid features a permanent all-wheel drive system with self-locking center differential. This provides a standard torque split of 60% to the rear and 40% to the front. If one of the wheels is about to lose grip, the self-locking center differential transmits the torque to the axle offering the highest level of traction. Variable distribution of engine torque to the rear wheels also enhances steering precision and driving dynamics.