The new 911 Turbo benefits from the completely new chassis set-up that was developed and adapted for the flagship model, the 911 Turbo S. As a result, Porsche has taken the concept of mixed tyres to a new level: the tyres on the front and rear axles differ not only in width but also in their wheel diameter. At the front, 255/35 20-inch tyres are now fitted on up to 9.5-inch wide wheels. On the rear axle, 21-inch tyres with size 315/30 fitted on up to 12-inch wide wheels transmit the main drive force to the road. The steering system with active rear axle steering has also been retuned. A six percent more direct steering ratio than on the predecessor model improves steering precision. This gives the sports car more agility, especially on twisty roads.
New active suspension system permits use of sports chassis for the first time
The second significant development is the new-generation Porsche Active Suspension Management (PASM) with even faster and more precisely controlled dampers. When needed, the new PASM offers significantly softer damping in both the compression and rebound stages than the previous system, which translates into greater comfort. At the same time, the new PASM can make the dampers act more firmly, resulting in significant driving dynamics advantages with respect to roll stability, road holding, steering behaviour, and indeed potential cornering speeds.
The faster-reacting dampers mean that a 10 mm-lower sports chassis is available as an option on the 911 Turbo for the first time. To guarantee maximum grip at all times, helper springs are additionally mounted on the rear axle which ensure adequate spring pre-loading of the main springs for full rebound. The significantly firmer set-up is aimed at enhancing driving dynamics and provides even more stability in high-speed sections, such as when the vehicle is used on race circuits.
Another new feature is the tyre temperature display, which is combined with the tyre pressure display. At a low tyre temperature, the blue bars warn about reduced road grip. As the tyres warm up, the display colour changes to blue-white and then changes to white once the operating temperature has been reached. This means that maximum possible grip is available, which allows drivers to precisely adapt their driving style to the grip level of the tyres. The system is deactivated and the bars are hidden when winter tyres are fitted.
More powerful brake system with ceramic option
At Porsche, increased engine power traditionally goes hand-in-hand with increased braking power. The grey cast iron brake system features aluminium monobloc fixed callipers with six pistons each on the front axle. The corresponding brake discs have a diameter of 408 millimetres (plus 28 millimetres) and a thickness of 36 millimetres (plus two millimetres). The brake system on the rear axle is unchanged with four-piston fixed callipers and 380 mm x 30 mm brake discs. The brake callipers are painted red as standard with High-Gloss Black optionally available. The “PORSCHE” logo on the brake callipers is white for this design.
Additional options allow the chassis of the new 911 Turbo to be adapted according to individual demands: the ceramic brake system (PCCB) is still available as before. Here, braking on the front axle is performed by 10-piston brake callipers and 420-mm diameter brake discs. Four-piston brake callipers and 390-millimetre brake discs are installed on the rear axle.
Cornering stability can be further enhanced with the optional anti-roll stabilisation (PDCC) without having to compromise on driving comfort.
As before, a lift function is optionally available. This allows the ground clearance of the front apron to be increased by around 40 millimetres. Porsche is planning to extend this function to turn it into a smart lift system in the future. Here, the system saves the GPS coordinates of the current position at the push of a button. If the driver approaches this position from the same direction again, the front of the car will lift up automatically.