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Pirelli faces hot humid race in Maylaysia

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The Sepang circuit is one of the hottest and certainly the most humid venue of the year, with temperatures in the region of 95 degrees Fahrenheit and 80% humidity. The track is demanding on the tires due to its aggressive surface, heavy braking areas, long straights and wide variety of speeds and corners.

Once again Pirelli has nominated the hard and soft compound P Zero tires as the prime and option rubber respectively for Malaysia, as was the case in Australia last weekend. But the ever-present humidity in Malaysia makes rain almost inevitable at some point over the weekend. In 2009, the race had to be red-flagged after 31 laps due to torrential rain, while last year a number of drivers were caught out by a downpour during qualifying. This means that Pirelli's intermediate and wet tires stand a strong chance of making their competitive debut at Sepang.

During the two free practice sessions on Friday, Pirelli will be providing an extra two sets of dry-weather tires for the teams to assess. The new tire is an experimental hard compound that could be used in the future, in keeping with Pirelli's philosophy of combining entertainment with cutting-edge technology. The tire allocation for the rest of the weekend, from Saturday onwards, is not affected.

"We were absolutely thrilled by our grand prix debut in Australia, but we're aware that Malaysia should be a very different proposition, with higher temperatures and increased degradation,” said Pirelli’s Motorsport Director Paul Hembery.  “We said all along that we would be seeing two to three pit stops in Australia, but in Malaysia I think that figure is likely to increase to three to four. They say that it's never a question of if it rains at Sepang but when, so the performance of our wet tires could be crucial this weekend and we're certainly looking forward to seeing them out on track. We never believe in standing still at Pirelli, which is why the teams will have two extra sets of slick tires available to them during Friday's free practice sessions for evaluation purposes. With testing not allowed during the season, this gives us a valuable opportunity to gather more data and feedback, while it also gives the teams an interesting taste of what could be coming in the future."

Jenson Button of the McLaren team added, "The tires will be the same in Malaysia as they were in Australia: the hard and the soft compounds. But Sepang will be much hotter, with much higher track temperatures, maybe as much as 45 degrees centigrade (113 degrees Fahrenheit), and the track surface is very abrasive, particularly in comparison to Albert Park, which is very smooth. Sepang really requires a lot of high-speed stability from the tire. So all of these factors will make the tire situation a bit trickier – I think we'll see higher degradation and more pit stops. It's a highly abrasive track, so the fronts and rears will suffer. In terms of overall wear and durability across all the tracks we visit this year, Sepang probably sits somewhere in the middle."

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