On the exterior, the 911 GT3 R has a longer wheelbase that’s 83 mm more than the road version. This translates to better weight distribution and a more predictable handling. The double-bubble roof fuses rather well with the sports car’s lightweight body.
The exterior highlights include CFRP (Carbon-fiber Reinforced Plastic) front cover and fairing, wheel arches, doors, side and tail sections as well as rear cover. All windows, and for the first time even the windscreen, consist of polycarbonate. The distinctive wheel arch air vents on the front fairings increase downforce at the front axle. Measuring 200 mm in width, the rear wing lends aerodynamic balance. From its 911 RSR big brother, the GT3 R has adopted the concept of the centrally-positioned radiator. By eliminating the side radiators, the position of the centre of gravity was improved, the radiator is better protected against collision damage, and the venting of hot air through louvers in the front cover has been enhanced.
Powering the new 911 GT3 R is a cutting-edge four-liter flat-six unit which is largely identical to the high-performance production engine of the road-legal 911 GT3 RS. Direct petrol injection, which operates at pressures up to 200 bar, as well as variable valve timing technology ensure a particularly efficient use of fuel. Power from the rear engine is transferred to the 310 mm rear wheels via a Porsche sequential six-speed constant-mesh gearbox. As in the GT road-going variants of the 911, the driver changes gears via shift paddles conveniently positioned on the steering wheel.
When it comes to braking, the 911 GT3 R takes no prisoners thanks to its six-piston aluminium monobloc racing brake callipers with ventilated and grooved steel brake discs (diameter of 380 mm) front and the rear’s four-piston callipers and discs (372 mm).
Another development focus was on the safety features of the GT3 R. The capacity of the further-reinforced FT3 safety fuel cell was increased by twelve liters to now hold 120 liters, with the tank now featuring a fuel cut-off safety valve. The doors and the side windows can be removed, and the escape hatch in the roof is now larger. In the event of an accident, the new racing bucket seat offers pilots even better protection.
2015 Porsche 911 GT3 R Specifications
Total weight: 1,220 kg (estimate)
Overall length: 4,604 mm
Overall width front axle: 1,975 mm
Overall width rear axle: 2,002 mm
Wheelbase: 2,463 mm
4,000 cm3; stroke 81.5 mm; bore 102 mm
Output: over 368 kW (500 hp) subject to FIA BoP (air restrictor)
Direct fuel injection
Dry sump lubrication
Porsche sequential six-speed constant-mesh gearbox
Front axle: McPherson strut, adjustable in height, camber and toe
Rear axle: Multilink independent rear suspension, adjustable in height, camber, toe
Front: Six-piston aluminium monobloc racing brake calliper
Rear: Four-piston aluminium monobloc racing brake calliper
Front:BBS 12.0J x 18/300/650-18
Rear: 13J x 18 offset 37.5 x 310/710-18
COSWORTH power module IPS32