The chassis is derived from the 911 Turbo Sport suspension and has been modified especially for the 911 GTS to meet exacting performance demands: thanks to the standard Porsche Active Suspension Management (PASM), the shock absorbers respond to dynamic changes at lightning speed. The latest generation of PASM is fitted as standard. When needed, this offers significantly softer damping in both the compression and rebound stages than the previous system, which translates into greater ride comfort. At the same time, the new PASM can make the shock absorbers act more firmly, resulting in significant dynamic handling advantages with respect to body control, roadholding, steering behaviour and potential cornering speeds.
In the Coupé and Cabriolet, the 10 mm-lower Sport suspension is fitted as standard. The concept of helper springs on the rear axle also originates from the Turbo models. These keep the main springs under tension in all driving conditions, thereby maintaining rebound. The Targa is fitted with unlowered PASM suspension.
Steering behaviour and traction both benefit from Porsche Torque Vectoring (PTV). This system supplements the Porsche Stability Management (PSM) and operates with intelligent braking interventions on the rear wheels. There are two variants of the 911 GTS, depending on the specifications:
-
PTV Plus with an electronically controlled, fully variable differential lock is fitted in combination with the standard eight-speed Porsche dual clutch transmission (PDK). This noticeably improves traction when accelerating out of corners, through intelligent locking of the differential.
-
911 GTS models with the optional seven-speed manual gearbox have an intermediate throttle function as well as PTV with mechanical limited-slip differential.
The engineers have also adapted the braking power to match the increased performance of the 911 GTS. It relies on the same grey cast iron high-performance braking system used on the 911 Turbo. The high-quality brake components include six-piston aluminium monobloc fixed callipers on the front axle and four-piston fixed callipers on the rear axle. Dimensions of the grey cast iron discs:
| Standard brake | Front axle | Rear axle |
| Diameter | 408 mm | 380 mm |
| Thickness | 36 mm | 30 mm |
The 20-inch (front) and 21-inch (rear) black, centre-lock alloy wheels are derived from the 911 Turbo. Wheels with a conventional bolt pattern are also optionally available.
The chassis can be customised both visually and technically with a host of options:
the brake callipers are painted red as standard, but can also be optionally ordered with a high-gloss black finish.
With the Porsche Ceramic Composite Brake (PCCB), yellow or, as an option, black brake callipers with six pistons and 410 mm discs provide retardation at the front axle. Four-piston callipers and 390 mm discs are fitted on the rear axle. The key advantages of PCCB are faster responses on dry roads, very high resistance to fade, and a much lower weight.
Active roll stabilisation (Porsche Dynamic Chassis Control, PDCC) provides further-enhanced cornering stability. On uneven road surfaces, ride comfort is improved by allowing the PDCC to take pressure out of the cylinders accordingly. This reduces wheel-load fluctuations and in turn increases driving performance. The system uses actively adjustable hydraulic cylinders, located directly on the suspension. The cylinder stroke is changed by electrically controlled filling of the hydraulic cylinders with oil, and the respective roll stabilisation is pre-tensioned either more or less as a result. The intelligent control of the PDCC system is able to individually adjust the hydraulic actuators depending on the driving situation. This influences the self-steering response and improves vehicle stability.
With the front axle lift function, the ground clearance of the nose of the car can be increased by around 40 mm. By increasing the overhang angle as well, the electrohydraulic lift system makes driving into garages and multi-storey car parks easier, for example. It can also prevent bottoming out on road humps.
The active rear axle steering offers many advantages such as greater agility in narrow bends, more stability when changing lanes at high speed, and better manoeuvrability in urban traffic. Up to a speed of approximately 50 km/h, the system steers the rear wheels in the opposite direction to that of the front wheels. This reduces the turning circle from 11.2 to 10.9 metres. From 80 km/h up, the wheels are steered in the same direction, ensuring better driving stability. Thanks to the faster build-up of cornering forces on the rear axle, changes in direction can be initiated more spontaneously and smoothly.
The optional Power Steering Plus provides additional comfort. At high speeds, the steering is as firm as ever and provides very good feedback on the driving conditions, lateral acceleration and road surface. At low speeds, there is greater steering force support, Which makes manoeuvring and parking easier.
