page_title: 2015 6 Hours of Silverstone
section_title: Practice
hierarchical_section_title: 2015 6 Hours of Silverstone / Practice
caption_attribution_description: English: WEC Silverstone 6 Hours 2013: Benoît Tréluyer (Audi Sport Team Joest)
context_page_description: The 2015 6 Hours of Silverstone was an endurance sports car racing event held for Le Mans Prototype and Le Mans Grand Touring Endurance cars at the Silverstone Circuit near Silverstone, Northamptonshire, England on 10–12 April 2015 before a crowd of 45,000 spectators. The event served as the opening round of the 2015 World Endurance Championship; it was fourth running of the event as part of the championship.
  The No. 17 Porsche 919 Hybrid of Timo Bernhard, Brendon Hartley and Mark Webber qualified in pole position by setting the fastest lap in class. They maintained the lead for the opening 80 minutes until they suffered a terminal rear drivetrain failure. This allowed the sister No. 18 car driven by Marc Lieb, Neel Jani and Romain Dumas to take over first position. Thereafter, the crew of the No. 18 Porsche battled the No. 7 Audi R18 e-tron quattro of André Lotterer, Marcel Fässler and Benoît Tréluyer for the lead throughout much of the event. This led to multiple overtakes by the No. 7 team that were repelled soon after by the No. 18 Porsche team. It had the advantage of being faster in a straight line, but the Audi was better in the track's corners. Although the No.
context_section_description: Three practice sessions—two on Friday and a third on Saturday—were held before the Sunday race. The Friday afternoon and early evening sessions lasted 90 minutes; the third, one-hour session was held on Saturday morning. The first session was held in sunny weather and most of the best efforts from the drivers came in its opening minutes. Lucas di Grassi in the No. 8 Audi set the fastest lap time at 1 minute and 42.291 seconds, 0.144 seconds faster than Mark Webber's No. 17 Porsche. André Lotterer in Audi's No. 7 vehicle was third, and Neel Jani was fourth in the sister Porsche. The fastest Toyota was fifth after a lap from Alexander Wurz. Gustavo Yacamán led LMP2 in G-Drive Racing's No. 28 Ligier JS P2-Nissan with a lap of 1 minute and 50.213 seconds. He was 0.053 seconds quicker than Sam Bird in the sister entry. The No. 95 Aston Martin V8 Vantage driven by Nicki Thiim was quickest early on in LMGTE Pro. Klaus Bachler in the No. 88 Abu Dhabi-Proton Racing Porsche 911 RSR was fastest in LMGTE Am.
  Jarvis in the Audi No. 8 car led the second session early on before teammate Benoît Tréluyer in the sister No. 7 entry ended practice as the fastest driver with a best time of the day at 1 minute and 41.526 seconds. Jarvis's lap was 0.298 seconds off Tréluyer's pace  putting the No. 8 car second in the time sheets. Brendon Hartley was the best of the Porsches in third and his teammate Dumas was fourth. The two Toyotas of Stéphane Sarrazin and Nakajima rounded out the top six overall drivers. The pair of G-Drive Racing Ligiers were again fastest in LMP2 with Pipo Derani going quickest of the day with a 1 minute and 48.676 seconds lap. Bird was six-tenths of a second behind. The duo of Porsche Team Manthey cars driven by Richard Lietz (No. 91) and Frédéric Makowiecki (No. 92) led LMGTE Pro. Pedro Lamy's No. 98 Aston Martin recorded the fastest lap time in LMGTE Am.
  The third (and final) practice session was held in damp weather. Buemi and Wurz in the two Toyotas were the early pace setters until Marcel Fässler in the No. 7 Audi improved their lap times as some cars went off the slippery track and into Copse corner's gravel trap. A dry line began to appear after twenty-five minutes. The fastest overall leaders laps fell by five seconds as Lotterer improved on co-driver Fässler's time. Nelson Panciatici necessitated the showing of localised full course yellow flags when he spun and beached the No. 36 Signatech Alpine in the gravel trap at Stowe corner with twelve minutes to go. After practice restarted, Lotterer set the fastest overall lap time at 1 minute and 52.094 seconds in the session's closing minutes. Nakajima was the fastest of the two Toyotas in second, and the duo of Porsches driven by Lieb and Timo Bernhard placed third and fourth. Derani set a late effort of 2 minutes and 5.786 seconds to be the fastest in LMP2, followed by Matthew Howson in the No. 47 KCMG Oreca 05. Makowiecki put the No. 92 Porsche at the top of the LMGTE Pro time sheets. The fastest LMGTE Am lap came from Emmanuel Collard in the AF Corse No. 83 Ferrari 458 Italia.
caption: Benoît Tréluyer (pictured in 2013) set the fastest overall lap in all the three practice sessions.
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