2015 Porsche 911 RSR
In 2013, Porsche designed a new GT race car, the 911 RSR, for the FIA World Endurance Championship (WEC) and the Le Mans 24 Hours. It has updated this design for 2015 for both WEC and the new TUDOR United SportsCar Championship in the GT Le Mans class. The latest 911 RSR, which is based on the seventh generation of the iconic 911 sports car, follows in the footsteps of its successful predecessor, the 911 GT3 RSR. As with the production vehicle, the wheelbase grew by about ten centimeters. A new wishbone front suspension replaces the previously used McPherson struts. Another new development from Porsche Motorsport is the particularly lightweight racing gearbox. The six gears are selected via paddles on the steering wheel. The 470 hp, 4.0-litre six-cylinder boxer engine was taken from the predecessor and optimized in detail.
One of the priorities in the development of the new 911 RSR was the more evenly balanced weight distribution. The center of gravity is also significantly lower than that of its predecessor. Carbon fiber played a crucial role in the new design. The front and rear fenders, front and rear lids, doors, underbody, wheel arches, rear wing, dashboard and center console are constructed from the very light and strong material. Moreover, all windows are made of particularly thin and light polycarbonate. Also contributing to the weight reduction is the lithium-ion battery known from the GT road-legal models. With new air ducting, the radiator is now centrally-located in the front and even more effective than in the previous model.