Michelin OE fitment on Porsche 911 GT3 RS

Clermont-Ferrand, France – Porsche AG will fit all of its new 911 GT3 RS cars with MicheIin Pilot Sport Cup 2 ultra-high-performance tires in 265/35 ZR20 front and 325/30 ZR21 rear sizes, the French tire maker announced 19 May.

The Michelin Pilot Sport Cup 2 is billed as a new generation of road-legal track tires specially designed for ultra-high performance cars that are used on road and track.

The tire has also been picked by Porsche as OE fitment on other models, including the 918 Spyder, Cayman GT4 and 911 GT3.

The co-development of these tires, said Michelin, began with the ones that are fitted to the 918 Spyder.

They were then developed and fine-tuned to suit the characteristics demanded by Porsche engineers for the track-focused GT3 RS.

Using tyre sizes that are larger than those fitted to the GT3 means that the size of the contact patch of the tyres is increased by 20 percent at the front and 18 percent at the rear. Overall, this has the effect of increasing outright grip levels and contributes to the car’s more track-focused dynamic handling characteristics.

The tire uses the bi-compound technology, which involves the use of different rubber compounds on the inner and outer sections of the tread. Also, track variable contact patch 3.0 technology is employed, which optimises pressure in the tire's contact patch so the same amount of rubber is always in contact with the road or track, whether driving in a straight line or cornering.