Driving dynamics and suspension: Racetrack performance and everyday practicality

Driving dynamics and comfort on long journeys; racetrack performance and everyday practicality: the new Mercedes-AMG GT delivers on all counts. A great deal of attention was paid to the seamless integration of all mechanical and electronic systems during the design, development and testing. Whether it is the suspension, 3-stage ESP®, locking differential, steering, aerodynamics, tyres or brakes – only the successful precision engineering and concerted networking of individual specialist disciplines serve to produce the required results and thus the exhilarating sports car driving experience, characterised by superb precision and clear feedback.
The Mercedes-AMG GT offers the perfect conditions for this: it uses the technological DNA of the Mercedes-Benz SLS AMG, one of the most successful sports cars in recent years. Thanks to the optimum weight distribution of 47 percent (front) to 53 percent (rear), the vehicle's low centre of gravity and the selected suspension layout, the driver benefits from precise steering response, formidable agility, low inertia when changing direction, and outstanding traction. Highly neutral behaviour and defined, predictable responses at the tyre grip limit were important development objectives for the dynamic handling experts at Mercedes-AMG.
A wheel-locating double-wishbone suspension is used at the front and rear – a technology adopted straight from motorsport. Wishbones, steering knuckles and hub carriers on the front and rear axle are manufactured entirely out of forged aluminium in order to reduce the unsprung masses.
The double-wishbone concept locates the wheel clearly with minimal elastic movements. The high camber and track rigidity not only results in high cornering speeds, but also provides the driver with an optimum road feel when cornering at the limit. This manifests itself in the form of excellent lateral dynamics and handling stability at high speeds, and good compensation of external influences such as crosswinds, undulations or fluctuating friction coefficients. An extremely direct connection of the shock absorber on the rear hub carrier reduces vibrations and undesirable wheel load fluctuations.
Mercedes-AMG GT S with electronically controlled damping
The AMG RIDE CONTROL sports suspension with electronically controlled damping comes as standard on the Mercedes-AMG GT S, or as an option for the GT. The driver can adjust the damping characteristics at the push of a button in the AMG DRIVE UNIT or by using the AMG DYNAMIC SELECT drive modes. Three stages are available: "Comfort", "Sport" and "Sport plus".
  • "Comfort": Suitable for day-to-day driving, both urban and for comfortable long-distance tours.
  • "Sport": Configured for tracks such as the North Loop of Nürburgring – for a highly dynamic and fast style of driving on undulating, humped and irregular surfaces, also for very sporty driving on country roads.
  • "Sport Plus": Optimum mode for modern racetracks with very level surfaces, for example Hockenheimring. Suitable for corresponding driver training and competition on Track Days.
Thanks to the AMG RIDE CONTROL sport suspension, the driver benefits from exhilarating driving dynamics and the long-distance comfort that is a hallmark of the brand. The continuously active damping system improves handling safety and ride comfort, with individual, practically instant damper adjustment for each wheel – depending on the speed, driving style, road surface and the selected suspension setting.
The speed-sensitive sports steering of the GT features a variable steering ratio: it enhances vehicle handling and agility at low speeds while maintaining driving safety at high speeds. The power assistance is a particular highlight: it not only responds depending on road speed, but also on the current lateral acceleration and the selected AMG DYNAMIC SELECT drive mode. As a result, the driver has a perfect feel for the vehicle thanks to the direct feedback from the road.
The power steering fluid, which is subjected to high thermal loads when the car is driven extremely dynamically, is cooled with the help of an additional oil cooler – this is aerodynamically located on the central cooling module in the front end.
3-stage ESP® perfectly networked with the rear axle locking differential
The standard-fit 3-stage ESP® with the "ESP ON", "ESP SPORT Handling Mode" and "ESP OFF" functions works in perfect unison with the locking differential, and is tuned optimally to the outstanding driving dynamics. It allows the driver to make adjustments to individual requirements at the touch of a button.
Overview of 3-stage ESP®:
  • "ESP® ON": for a high level of safety by adaptation to the sporty character of the car
  • "ESP® SPORT Handling Mode": for a sporty driving style, allows wider drift angles before system intervention
  • "ESP® OFF": system deactivated for highly dynamic driving on enclosed race circuits
The currently active status is shown in the instrument cluster. "ESP® SPORT HANDLING MODE" is active as soon as the driver briefly presses the ESP® button in the AMG DRIVE UNIT once. Pressing and briefly holding the ESP® button activates "ESP® OFF". When the brake pedal is operated forcefully, all the functions of ESP® are restored.
Integrated into ESP®, Curve Dynamic Assist reduces understeer when cornering at high speed. Controlled brake pressure at the inside rear wheel assists the cornering process even before understeer occurs. The driver does not notice this sensitive braking intervention, only its positive effect with high adhesion at the front axle when cornering. Curve Dynamic Assist is more or less pronounced depending on the selected ESP® mode: in the stability-oriented "ESP® ON" mode there is less assistance, while in the far more agility- and performance-oriented "ESP® OFF" mode the assistance is so pronounced that understeer is almost completely eliminated, making for maximum agility and lateral acceleration.
Optional ceramic high-performance composite brake system
Excellent deceleration characteristics and high fade resistance come courtesy of the high-performance composite brake system – on the GT with internally ventilated, perforated 360-millimetre brake discs all-round; on the GT S with discs measuring 390 millimetres in diameter at the front, to cope with the higher performance, as well as red brake callipers. On request a ceramic high-performance composite braking system is available for both models – this is identifiable by the special bronze-painted brake callipers with "AMG Carbon Ceramic" lettering. Its advantages: lower weight, longer service life and even better fade resistance thanks to the ceramic brake discs with a diameter of 402 millimetres at the front and 360 millimetres at the rear.
The ceramic brake discs are around 40 percent lighter compared to conventional composite brake discs. The reduction in unsprung masses enhances driving dynamics and agility. At the same time the responsiveness of the steering and the suspension comfort are improved. Higher fade-resistance means a reduced loss of braking power in heavy use, for example on racetracks. Less force on the brake pedal is needed thanks to a higher friction coefficient. This allows more sensitive, precisely metered braking.
 
Mercedes-AMG GThigh-performance composite braking system
Mercedes-AMG GT Shigh-performance composite braking system
Front axle:
 
 
Brake calliper
Brake disc
DiameterThickness
6-piston aluminium fixed calliper in grey
Composite technology, ventilated, perforated
360 mm
36 mm
6-piston aluminium fixed calliper in grey
Composite technology, ventilated, perforated
390 mm36 mm
Rear axle:
 
 
Brake calliper
Brake disc
DiameterThickness
1-piston sliding calliper in grey
Composite technology, ventilated, perforated
360 mm
26 mm
1-piston sliding calliper in red
Composite technology, ventilated, perforated
360 mm26 mm
 
Ceramic high-performance composite braking system*
Front axle:
 
Brake calliper
Brake disc
DiameterThickness
6-piston aluminium fixed calliper in bronze
Ceramic composite technology, ventilated, perforated
402 mm39 mm
Rear axle:
 
Brake calliper
Brake disc
DiameterThickness
4-piston fixed calliper in bronze
Ceramic composite technology, ventilated, perforated
360 mm32 mm
* Optional equipment for GT and GT S
Forged wheels and sports tyres as an option
As standard the Mercedes-AMG GT is shod with 10-spoke light-alloy wheels painted in vanadium silver, 9 x 19 front and 11 x 19 rear, with 255/35 R 19 and 295/35 R 19 tyres. The GT S is fitted with 10-spoke light-alloy wheels painted in titanium grey, in size 9 x 19 (front) with 265/35 R 19 tyres and 11 x 20 (rear) with 295/30 R 20 tyres.
Numerous design and colour variants are optionally available for both models:
  • 5-twin-spoke light-alloy wheels painted in vanadium silver with 255/35 R 19 on 9 x 19 (front) and 295/35 R 19 on 11 x 19 (rear)
  • 10-spoke light-alloy wheels painted in titanium grey with high-sheen finish, with 265/35 R 19 on 9 x 19 (front) and 295/30 R 20 on 11 x 20 (rear)
  • 5-spoke light-alloy wheels painted in matt black with high-sheen rim flange, with 265/35 R 19 on 9 x 19 (front) and 295/30 R 20 on 11 x 20 (rear)
  • 5-spoke light-alloy wheels painted in titanium grey with high-sheen finish, with 265/35 R 19 on 9 x 19 (front) and 295/30 R 20 on 11 x 20 (rear)
The particularly lightweight, forged wheels in a cross-spoke design with fully integrated wheel bolt covers are a visual and technical highlight:
  • Forged wheels in a cross-spoke design painted in matt black with high-sheen rim flange, with 265/35 R 19 on 9 x 19 (front) and 295/30 R 20 on 11 x 20 (rear)
  • Forged wheels in a cross-spoke design painted in titanium grey and polished, with 265/35 R 19 on 9 x 19 (front) and 295/30 R 20 on 11 x 20 (rear)
Specially developed sports tyres are optionally available for the GT S in combination with the AMG DYNAMIC PLUS package. These Michelin Pilot Sport Cup 2 tyres in size 265/35 R 19 (front) and 295/30 R 20 (rear) are perfect for high-speed laps on enclosed racetracks. They ensure improved steering precision, a noticeable and measurable increase in grip and shorter braking distances on dry surfaces.
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