Porsche leads the manufacturers’ world championship
- In 2015 Jani/Lieb took pole position with an average lap time of 1:46.211 minutes. The overall fastest lap was done by Jani in 1:46.018 minutes. Hartley/Webber were second on the grid with a qualifying time of 1:46.375 minutes. (In the WEC the average of the respective best laps of two drivers counts for the grid position.)
- Bernhard/Hartley/Webber won last year’s race. After leading for a long time, Dumas/Jani/Lieb finished fifth in the LMP1 class.
- A lap on the Formula One circuit in Austin, that was opened in 2012, is 5.513 kilometres and has 20 corners. The circuit goes anti clockwise.
- At normal race speed (no safety car) the Porsche 919 Hybrid is due for refuelling after every 31 laps at the latest.
- Refuelling and changing tyres may only be done sequentially, not at the same time. Only four mechanics may work simultaneously when changing tyres and may use only one wheel gun. That takes a lot longer than in Formula One, for example.
- The drivers are normally only changed when new tyres are needed.
- A set of Michelin slick tyres should ideally last two fuel tank fills.
- The WEC efficiency regulations limit the amount of energy that can be used per lap. In Austin the Porsche 919 Hybrid can use 5.01 megajoule of electrical power from energy recovery systems and 1.411 kilograms or 1.930 litres of petrol.
- These different types of tyres can be used: three different compounds of slick tyres for dry conditions, a hybrid tyre (no profile either but softer cover) for mixed conditions and wet weather tyres. 6.5 sets of dry weather tyres are available per car for qualifying and the race.
Timo Bernhard (35, Germany): “Especially in the first session, it was really hot out there and this will be about the same for the start of the race at 5pm on Saturday. It’s a balancing act to get the car’s setup right for the race, because the longest part takes place after sunset in cooler conditions.”
Romain Dumas (38, France): “COTA is a nice and interesting track with a lot of grip. You have everything here – fast corners, slow corners, with camber and without camber. I think the 919 performs best in the fast corners between turns two and nine.“