This optional system for increasing dynamic performance and stability varies the distribution of torque to the rear wheels and includes a mechanically locking rear differential. When the car is driven assertively into a corner, moderate brake pressure is applied to the inside rear wheel, inducing an additional rotational pulse (yaw movement) around the vehicle’s vertical axis.
This results in a direct and sporty steering action as the car enters the corner.
At low and medium vehicle speeds, PTV significantly increases agility and steering precision. At high speeds and when accelerating out of corners, the rear differential lock ensures greater driving stability and traction on a range of surface conditions, including the wet and snow.
The results are remarkable stability, excellent traction, dynamic cornering at every speed, with precise steering and stable load transfer characteristics. And, of course, lots of fun at every twist and turn – typical of the Boxster.