Chassis & Suspension
Race-bred coilover sports suspension, perfectly balanced
The coilover suspension technology in the B6 GT3 played a central role in achieving success at widely varying race circuits, which all required very different set-ups. The direct transfer of this technology ‘from the track to the street’ allows for far reaching adjustment of the suspension on the B3 GT3 according to widely different requirements, and for fine-tuning and balancing the handling according to personal preference.
The coilovers are fully height adjustable, meaning the ride height of the vehicle can be changed significantly. Additionally the dampers feature a 12-fold compression and 18-fold rebound adjustment. The range of adjustment has been carefully calibrated to allow for a dynamic yet sufficiently comfortable road-biased set-up for normal driving while simultaneously offering an amplitude of adjustment for also achieving a purely track-focussed race set-up.
Fundamental suspension components including the springs and stabilisers have been specifically calibrated by ALPINA to suit the dynamic focus of the B3 GT3. Special top mounts with adjustable top mount plates at the front ensure an especially stiff connection to the chassis. Combined, all these components ensure that the B3 GT3 exhibits the kind of poised and extremely neutral handling which one expects from ALPINA.
The overall chassis and suspension set-up translates into a real performance increase and exceptional levels of lateral grip. If necessary over and understeer can also be influenced according to personal preference by means of adjusting the camber at the front, just like on the B6 GT3 race car.
ALPINA GT3 CLASSIC 19“ lightweight alloy wheels, forged
Anyone mentions the name ALPINA, most people inevitably think of the famous ALPINA CLASSIC light alloy wheels, their closely guarded trademark design significantly shaping the appearance of almost all BMW ALPINA automobiles since the beginning.
It is only logical then, that the new and exclusively for the B3 GT3 available lightweight forged alloy wheels also carry the CLASSIC design. Forged aluminium alloy exhibits much higher stiffness and strength characteristics compared to conventional cast aluminium alloy, translating into a significant weight reduction and more design freedom.
The design of the 19” lightweight forged alloy wheels, which are painted in Himalaya Grey, has been inspired by the B6 GT3 race car. The 20 spokes are particularly fine and ‘clean’, giving the wheel a minimalist technical and timeless appearance. The new wheels, which are 25% lighter, result in a further weight reduction of 10kg, despite increasing half-an-inch in width to of 8.5 x 19“ front and 9.5 x 19“ rear (front: 8.6kg, rear: 9.5kg).
GT3 Cup wheel and tyre set
For everyday use, the B3 GT3 comes equipped with MICHELIN Pilot Sport 2 tyres as standard. For the race track, an optional GT3 Cup wheel and tyre set, consisting of a set of ALPINA GT3 CLASSIC 19“ lightweight alloy wheels, forged, with MICHELIN Pilot Sport Cup+ tyres is available.
The Cup tyres deliver excellent performance on the track in dry conditions and at an optimum tyre operating temperature range from 50°C to 90 °C. Despite being road legal, these tyres are not recommended for everyday use because public roads do not offer the suitable conditions for achieving the optimum tyre operating temperatures. Furthermore, these tyres have very little negative profile, necessitating super careful driving in damp and wet road conditions (aquaplaning).