Improved lateral dynamics and advanced driving comfort
Chassis and chassis systems
The Cayenne Coupé is fitted with the same lightweight base chassis as the Cayenne with a front axle featuring a separated link design and a multi-link rear axle. An aluminium auxiliary frame stiffens the front axle construction and supports the engine via its integrated bearings. On the rear axle of the Cayenne Coupé and Cayenne S Coupé, Porsche fits a multi-link suspension with lightweight steel links and steel springs. The responsiveness of the dampers and thus also the spring comfort profit from the separated spring-damper arrangement on the spring links and the almost perpendicular damper arrangement. In combination with the wider wheels, the 18 millimetre wider rear ensures even more stability on the rear axle.
In combination with the adaptive three-chamber air suspension, fitted as standard on the Cayenne Turbo Coupé, aluminium forged links are used at the rear. The adaptive air suspension uses three chambers for each spring strut. The chassis is therefore able to work at three different spring rates. With the choice of five different ride heights, the ground clearance can be manually adapted to the terrain for offroad driving. They are also controlled actively with five new adapted driving modes for onroad and offroad driving.
All Cayenne Coupé models include Power Steering Plus, at least 20-inch wheels and the Porsche Active Suspension Management (PASM) damping system as standard. Power Steering Plus is firm as usual at high speeds. At low speeds, the steering force is assisted greatly to help the driver when parking and manoeuvring. Depending on the road conditions and driving style, the PASM actively and continuously regulates the damping force for each wheel individually. Three different programmes can be selected via the Porsche Communication Management (PCM), the PASM button or the Sport button: Normal, Sport or Sport Plus.
The spread of the chassis between comfort and sporty can be further increased on request with optional systems.
- The Porsche Dynamic Chassis Control (PDCC) active roll stabilisation system works with 48-volt technology based on super caps and is capable of adjusting the torsional rigidity of the anti-roll bars on the front and rear axles in milliseconds, actively stabilising the vehicle body. At a lateral acceleration of up to 0.8 g, the lateral inclination in a Cayenne Coupé with two occupants is suppressed. The design features an anti-roll bar divided in two, with the halves joined together by a pivot motor. Depending on the car’s roll angle, the motor rotates the two halves in opposite directions, strengthening the rigidity of the anti-roll bar and keeping the vehicle upright. In the offroad modes, the PDCC largely disengages the anti-roll bar halves, or even actively rotates them. This enables greater axle articulation, and helps maintain contact with the ground to ensure optimal traction offroad. On fast roads, this function also means that the replication effects of the anti-roll bar are reduced to zero, and the spring and wheel movements can be damped completely independently of one another.
- Thanks to the rear-axle steering, the Cayenne Coupé steers without delay and builds up lateral acceleration at the rear-axle much sooner. Rear-axle steering also boosts comfort and safety in day-to-day driving. The car’s turning circle is reduced from 12.1 metres to 11.5 metres. At speeds of up to approximately 80 km/h, the axles steer in opposite directions. This feature not only ensures significantly higher agility and steering precision, but also makes manoeuvring easier. At higher speeds, both axles steer in the same direction, resulting in even greater driving stability, for example when changing lanes on the motorway at high speeds. The maximum steering angle used on the rear axle is three degrees.
- Porsche Torque Vectoring Plus (PTV Plus) is an ideal addition to the standard Porsche Stability Management (PSM) for enhancing driving dynamics and stability. This electronically controlled, fully variable rear differential lock improves the steering response and precision of the vehicle by applying brake pressure to the inside rear wheel as the situation demands. The effect is a direct and sporty steering action. It offers significant advantages when driving into bends. Brake pressure is selectively applied to the inside rear wheel as soon as the steering wheel is turned. Consequently, a greater amount of drive force is distributed to the outside rear wheel than to the inside wheel. This difference in torque induces a yaw torque which additionally supports the steering action. The result is a significant increase in agility and steering response. What’s more, PTV Plus noticeably improves traction while accelerating out of corners by locking the differential.
- At the core of the Porsche Surface Coated Brake (PSCB: standard on the Cayenne Turbo Coupé) are discs with an exceptionally hard tungsten-carbide coating, combined with specially developed brake pads. Compared to conventional grey cast iron brakes, the new system boasts far superior properties – including an up to 30 per cent longer service life. The discs not only wear at a significantly slower rate, but also generate less brake dust accumulation on the wheels. The increased friction values of the brakes also ensure improved responsiveness. The PSCB delivers stable braking even under extreme stress. A side effect of the new technology is the unique appearance of the coated discs. After around 600 kilometres of day-to-day driving, the pads will have polished the surface to a gleaming shine, creating a mirror-like finish. The aesthetic effect is enhanced by the white brake callipers.
- The decisive advantage of the Porsche Ceramic Composite Brake (PCCB) is the extremely low weight of the brake discs: They are roughly 50 percent lighter than grey cast iron brakes of a similar type and size. A factor which not only has a positive effect on driving performance and consumption, but which above all reduces the uncushioned and rotatory masses. The result: better road grip and increased driving and vehicle comfort, especially on uneven roads. Under high load in particular, it is well-suited to achieving a short braking distance. Moreover, the high fading stability of the PCCB means greater safety when braking at high speed.
Alloy wheels: 20 inches and larger
The wheels available on the new Cayenne Coupé start at 20 inches and now include more designs than those familiar from the Cayenne. The availability of two other 22-inch wheels means that the vehicle can now be fitted with very exclusive equipment:
- The sporty RS Spyder Design wheel is available for the Cayenne Coupé in 22 inches as well.
- One special highlight is the 22-inch GT Design wheel only available in combination with the lightweight sports packages. It is based on the design of the wheels fitted on 911 GT models. Thanks to its aluminium lightweight design with forged milling technology taken from motor sports, the wheel offers dynamic driving benefits.