The front tires write first. Across wet tarmac, the Porsche 911 Carrera 4S can send torque forward through an electrohydraulic clutch before a driver senses the rear axle beginning to rotate. The old argument breaks. Its rear-mounted flat-six still loads the driven wheels, yet all-wheel drive turns that inherited mass into measured control.This is not a rescue system. Porsche Traction Management r...More