Perfect traction was Porsche's goal when they designed the 959. The PSK 4-wheel drive system was the techological highlight of the 959. PSK, which did add weight to the car, could vary the ratio of torque to the front & rear wheels. The default setting for the system was 40% front and 60% rear. Under acceleration the PSK adjusts to ratio to 80% torque to the rear wheels. During slippery conditions the ratio was 50 : 50. ... Read More
