Michelin and Renault Develop 18- and 17-inch Diameter Tires for Single-Seater Racing Cars

We are not limiting our online publication to ICT as we are very much interested in technologies that also helps transportation, or even racing, vehicles.

The world of sports car racing requires only the most advanced vehicle technology which includes the design and creation of tires. The better the technology incorporated in your vehicle, the more chances of being first in the finish line.

Renault Sport and Michelin have concluded that the replacement of the 13-inch tires that currently equip the WSR’s FR3.5 and FR2.0 cars by 18- and 17-inch tires respectively is a first class solution to make driving even more enjoyable for competitors, including enhanced performance during transient phases. Tires with smaller sidewalls produce less yaw, greater precision and improved steering response. At the same time, the change marks a big step forward in terms of the opportunities it offers when it comes to carrying over technology to Michelin road tires.

Motor racing has served as an important testing and development laboratory for technologies that go on to be used for road car tires. Michelin has long adhered to this philosophy and uses all the disciplines in which it is active to collect technical data that its Research and Development experts can dial into new, ever better-performing and increasingly efficient tires.

The World Series by Renault features two single-seater championships which are reputed for revealing talented upcoming drivers. They are the Eurocup Formula Renault 2.0, which is open to drivers as young as 16 years old, and the Formula Renault 3.5 Series which stands out as a benchmark series for the grooming of future Formula 1 drivers.

The conclusions of Michelin and Renault Sport with regard to the use of bigger-diameter tires eloquently illustrate the innovative philosophy that drives the two companies who, as leaders in their respective fields, have their sights set firmly on the future.

Testing resulted in the selection of the following sizes for the future :

	Today		Tomorrow
FR3.5 (front slick)	26/64x13	-->	28/71x18
FR3.5 (rear slick)	32/66x13	-->	33/71x18
FR2.0 (front slick)	20/54x13	-->	20/61x17
FR2.0 (rear slick)	24/57x13	-->	24/64x17

“There are solid grounds from both the technical and sporting viewpoints for switching to 18-and 17-inch tires,” notes Philippe Mussati, Manager of Michelin Motorsport’s Customer Competition Department. “Our tests reveal that the drivers benefit from more precise performance, while the change also provides the teams with additional scope for set-up work which would consequently have a far bigger influence on results. On top of all this, bigger tires also enhance the cars’ look.


“Renault Sport and Michelin believe these new tire sizes represent the future of single-seater racing. Any decision to use them for the World Series by Renault from 2016 will only be made once the development programme has been completed, but the perspective of Michelin being behind such a ground breaking shift in the world of single-seater racing in association with its long-time partner Renault Sport is an additional source of satisfaction for us.”

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