Porsche Torque Vectoring (standard on 911 Turbo S models, optional for 911 Turbo models), with variable torque distribution to the rear wheels and a mechanical limited-slip rear differential, is a system that actively enhances vehicle dynamics and stability.
As a function of steering angle and steering speed, accelerator pedal position, yaw rate and vehicle speed, PTV is able to improve steering response and steering precision significantly by specific braking of the right or left rear wheel.
In simple terms, this means that when the car is driven assertively into a corner, moderate brake pressure is applied to the inside rear wheel. Consequently, excess drive force, which varies depending on the braking force applied to the inside rear wheel, can be distributed to the outside rear wheel, and a rotational pulse (yaw movement) is generated around the vehicle’s vertical axis. This assists the steering input and results in a more assured steering manoeuvre.
At low and medium vehicle speeds, the system significantly increases agility and steering precision, whilst at high speeds, and in combination with the mechanical limited-slip differential, it additionally ensures greater driving stability.
The system, combined with Porsche Traction Management (PTM) and Porsche Stability Management (PSM), also puts its stabilising effect to good use on road surfaces with varying levels of grip and on snow and ice.
As PTV increases the car’s dynamic performance, the system remains active when driving on the racetrack, even if PSM has been deactivated.
Where efficiency is concerned, this enhanced performance and stability are achieved without the need for any additional components, apart from the mechanical limited-slip rear differential. In other words, a more enjoyable drive with no additional weight.