The technological competence with which Audi developed the new TT* and TTS* is also reflected in the chassis. The pivot bearings and subframe of the McPherson front suspension are made of aluminum. The rear suspension uses four steel links per wheel in order to process the longitudinal and lateral forces separately. Their springs and dampers are separate from one another and respond very precisely. The body is lowered ten millimeters (0.4 in) on the TTS, with the S line sport package and with Audi magnetic ride.
The new Coupé comes standard with progressive steering. Its rack is specially geared to produce different boost ratios depending on the steering angle – somewhat less direct on center and very direct when the wheel is turned far. This solution provides for easy maneuvering, agile handling and smooth straight-line stability. The electromechanically generated servo boost, which decreases with increasing speed, harmonizes perfectly with this character. The progressive steering works in close conjunction with three assistance systems – the standard rest recommendation and the optional Audi active lane assist and park assist systems.
Twelve different wheels are available. The TT 2.0 TFSI and 2.0 TDI come standard with 17-inch lightweight wheels weighing just 8.7 kilograms (19.2 lb) each and 225/50 tires. Audi and quattro GmbH offer 18, 19 and 20-inch wheels in attractive designs including matt titanium-look as options. The TTS comes with 18-inch wheels and 245/40 tires. Weighing just 10.6 kilograms (23.4 lb) each, the optional 19-inch forged wheels are very light. A tire pressure indicator is standard.
Powerful brakes are located behind the large wheels; the front discs are internally vented. The TTS uses newly developed aluminum fixed-caliper brakes on the front axle. Their lightweight design reduces weight by nearly five kilograms (11.0 lb) versus the previous model. The new electromechanical parking brake acts on the rear wheels.
Audi drive select
The Audi drive select dynamic driving system is an option for the new Audi TT, but standard on the TTS. The driver can choose at the push of a button whether the accelerator, the sound actuator and steering boost should be active in comfort, auto, dynamic or efficiency mode. If an MMI navigation system is on board, a fifth individual mode is added that is largely freely configurable. The system also accesses multiple optional modules – S tronic, quattro all-wheel drive, cruise control and automatic air conditioning (some of which are standard in the TTS).
Another module controlled via Audi drive select is the Audi magnetic ride damper control system (optional in the TT, standard in the TTS). A synthetic oil containing microscopically small magnetic particles circulates within the damper pistons. Each of the front dampers contain 140 milliliters; the rear dampers 290 milliliters each. When a voltage is applied to a coil, a magnetic field is generated in which the alignment of the particles changes so that they are perpendicular to the oil flow, thereby inhibiting its flow through the shock absorber channels.
The control unit continuously analyzes the driver’s style and the condition of the road. Depending on the setting in Audi drive select, the ride of the new Audi TT and TTS is either relatively comfortable, balanced or decidedly taut. Dynamic mode unveils its full dynamic potential. The targeted bracing of the individual wheels during fast cornering ties the Coupé tightly to the road. It largely suppresses roll and makes steering response even more spontaneous. Audi magnetic ride reduces body pitch during braking.
Electronic limited slip differential/torque vectoring
The electronic stabilization control (ESC) rounds out the sporty handling characteristics of the new TT and TTS. The driver can deactivate it entirely or in part via a switch on the center console. The system remains active in Sport mode, but responds later and in combination with quattro all-wheel drive permits controlled drifts because it rarely intervenes. If the driver presses the corresponding button for longer than three seconds, ESC is deactivated completely. This may be chosen for a fast lap around a race track, for example.
In TT models with front-wheel drive, the electronic limited slip differential – a function of the ESC – brakes the inside front wheel slightly while cornering at the limit. In the TT quattro and TTS, torque vectoring affects both inside wheels. The excess torque is transferred to the opposite wheel. Thanks to the difference in traction forces, the car turns slightly into the corner. This dramatically increases the dynamism and stability of front-wheel drive TT models, in particular.
The equipment, data and prices specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.