Pirelli have confirmed that the medium and hard tyres have been brought to Austin for this weekend's United Stated Grand Prix - the same nomination as was the case in 2012.
These compounds were chosen because of the amount of energy that is put through the tyres due to the varied and high-speed nature of most of the corners on the Circuit of the Americas.
The Circuit of the Americas, where traction out of slow corners as well as lateral grip through the high-speed changes of direction are equally important, is one of the few circuits that runs in an anti-clockwise direction.
"The hard and medium tyres are the best choice for the United States Grand Prix, because it's a circuit that places several high-energy demands on the tyres, so you need the most durable compounds in the range. There are some fast corners and many rapid elevation changes as well: in that respect it's a bit like Spa. When you have more energy going through the tyre, you have a bigger heat build-up - which is what increases wear and degradation. Now that we're coming to the USA for the second time we have a better idea of what to expect, whereas last year - when we also nominated the hard and the medium - it was much more of a step into the unknown," said Pirelli Motorsport Director Paul Hembery.
"This year's compounds are softer, so we would expect around two pit stops in the race, depending also on the rate of track evolution. Even though it's November we're still likely to have warm weather, which obviously affects thermal degradation too. Formula One received an absolutely fantastic welcome from the American public last year, which made it a truly memorable race, and we're very much looking forward to going back to a country full of great F1 fans, which is also a key market for our Ultra High Performance tyres."
