Porsche unveiled at the Nurburgring the all-new 2015 Porsche 911 (991) GT3 R, its latest racing car based on the 911 (991) GT3 RS production sports car. According to the German manufacturer, the engineers focused on the lightweight design, better aerodynamic efficiency, reduced fuel consumption, improved handling and increased safety.
Just like the production version, the 911 GT3 R arrives with the distinctive double-bubble roof, while the wheelbase was lengthened by 8.3 cm compared to the previous generation. Moreover, thanks to the systematic lightweight solutions for the body, add-on parts and suspension, the centre of gravity position of the vehicle was also optimized compared to its predecessor.
In addition, the roof, front cover and fairing, wheel arches, doors, side and tail sections as well as the rear cover are made of light carbon-fiber composite material (CFRP). In order to save weight, all windows (for the first time even the windscreen) are made of polycarbonate.
Aerodynamics of the 911 GT3 R are inspired by the road car and we find the distinctive wheel arch air vents located on the front fairings, which increase the downforce at the front axle, we well as the big rear wing measuring 2 metres in width by 40 cm in depth.
Furthermore, the 911 GT3 R adopted the concept of the centrally-positioned radiator, which eliminates the side radiators and improves the position of the centre of gravity. Braking system was improved too and arrives with six-piston aluminum monobloc racing brake calipers and ventilated and grooved steel brake discs with a 380 mm diameter at the front, while the rear axle received four-piston calipers and 372 mm discs.
The capacity of the FT3 safety fuel was increased by 12 liters, which means that now holds 120 liters, with the tank featuring a fuel cut-off safety valve. The race car is powered by the same 4.0-liter flat-six petrol engine found on the road-legal version, which delivers 500 hp (368 kW).
Power is delivered to the 310 mm rear wheels via the Porsche sequential six-speed constant-mesh gearbox. The driver is able to change gears via the shift paddles positioned on the steering wheel. Pricing starts at 429,000 euros plus country-specific VAT and the first units will be delivered from December 2015. [source: Porsche]