Manual: 2013/2014 911

Page: 166

Porsche Torque Vectoring (PTV) / (PTV Plus)
Functional Description

Loss of control over the vehicle

Despite the advantages of PTV, it is still the driver's responsibility to adapt his/her driving style and manoeuvres in line with road and weather conditions, as well as the traffic situation.

The increased safety that is provided should not induce you to take greater risks with your safety. The limits set by the physics of driving cannot be overcome, even with PTV.

Risk of accidents due to inappropriate speed cannot be reduced by PTV.


Vehicles with manual transmission:
Porsche Torque Vectoring (PTV)

PTV consists of a control system for drivingdynamics relevant brake interventions enabling variable drive-torque distribution at the rear axle and a mechanical rear-axle differential lock.

By using gentle braking interventions that are imperceptible to the driver at the rear wheel on the inside of the bend, PTV improves steering performance and steering precision. The vehicle follows the steering angle of the front wheels more precisely. Understeer is largely prevented in the limit range. This increases the lateral acceleration potential and higher cornering speeds are possible.

The mechanical rear-axle differential lock improves traction in the event of wheel spin.

It reduces load alteration effects during rapid cornering and increases driving stability at higher speeds.

Vehicles with Porsche Doppelkupplung:
Porsche Torque Vectoring Plus (PTV Plus)

PTV Plus consists of a control system that performs braking interventions based on driving dynamics to achieve variable drive torque distribution on the rear axle and of an electronically controlled rear differential lock.

PTV Plus improves steering response and precision through gentle braking interventions on the inside rear wheel. This braking action cannot be felt by the driver. The vehicle follows the steering angle of the front wheels more precisely.

Understeer is largely prevented in the limit range. This increases the lateral acceleration potential and higher cornering speeds are possible.

The electronically controlled rear differential lock continuously monitors the driving condition of the vehicle and distributes the drive torque to the rear axle as required.

This has the following advantages:
– Improved traction.
– Reduced load change responses when cornering at speed.
– Improved driving stability at higher speeds.

PTV Plus changes to a more dynamic map when "Sport Plus" is switched on.

Porsche Dynamic Chassis Control (PDCC)

Loss of control over the vehicle

In spite of the advantages of PDCC, it is still the driver's responsibility to adapt his driving style and manoeuvres in line with road and weather conditions, as well as the traffic situation.

The increased safety that is provided should not induce you to take greater risks with your safety. The limits set by the physics of driving cannot be overcome, even with PDCC.

Risk of accidents due to inappropriate speed cannot be reduced by PDCC and PTV Plus.


Porsche Dynamic Chassis Control (PDCC) is a system for roll stabilisation of the vehicle body when driving.

Driving comfort and driving safety are improved by active intervention of the anti-roll bars on the front and rear axles. Vehicle balance and agility are optimised.

No separate controls are available for the PDCC system.

When you select a chassis setup in Porsche Active Suspension Management (PASM) the PDCC system automatically activates the corresponding on-road driving programme.

For information on selecting a chassis setup:

  • Please see the chapter "PORSCHE ACTIVE SUSPENSION MANAGEMENT (PASM)" on page 165.