The 18th Petit Le Mans was severely hampered by rain and the surreal race ended with the #911 Porsche of Patrick Pilet, Nick Tandy and Richard Lietz winning the abbreviated race overall. With the victory, Pilet won the 2015 IMSA GT Le Mans championship. GTLM cars went 1-2 overall as the #24 Rahal Letterman Lanigan Racing BMW of John Edwards, Lucas Luhr and Jens Klingmann finished second.
Third overall was the #5 Action Express Racing Corvette DP of João Barbosa, Christian Fittipaldi and Sébastien Bourdais. Barbosa and Fittipaldi won the prototype championship for the second consecutive year. The #01 Ganassi Ford-Riley of Scott Pruett, Joey Hand and Scott Dixon finished fourth overall with the #31 Action Express Racing Corvette DP of Dane Cameron, Eric Curran and Max Papis rounding out the top five and the Prototype-class podium.
Third in GTLM, sixth overall was the #4 Corvette of Tommy Milner and Oliver Gavin. The #10 Wayne Taylor Racing Corvette DP of Ricky Taylor, Jordan Taylor and Max Angelelli finished seventh overall with the #25 RLLR BMW of Bill Auberlen, Dirk Werner and Augusto Farfus in eighth. The #62 Risi Competizione Ferrari of Giancarlo Fisichella, Pierre Kaffer and Toni Vilander and the #3 Corvette of Jan Magnussen, Antonio García and Ryan Briscoe rounded out the top ten.
Wolf Henzler, Bryan Sellers and Patrick Long brought the #17 Team Falken Tire Porsche home in 11th in the final race with Falken Tire sponsorship. The #90 Spirit of Daytona Corvette DP of Michael Valiante, Richard Westbrook and Mike Rockenfeller finished 12th. Valiante and Westbrook lost the Prototype title to Barbosa and Fittipaldi by three points. The #912 Porsche finished 13th with Jörg Bergmeister, Earl Bamber and Frédéric Makowiecki.
Mike Guasch, Tom Kimber-Smith and Andrew Palmer won in Prototype Challenge, finishing 14th in the #52 PR1/Mathiasen Motorsports Oreca. The #8 Starworks Oreca of Renger van der Zande, Mike Hedlund, Mirco Schultis and Alex Popow were second in class with the #16 BAR1 Motorsport Oreca of Johnny Mowlem, Marc Drumwright, Tomy Drissi and Don Yount rounded out the podium. The #54 CORE Autosport Oreca finished fourth in class and it clinched Colin Braun and Jon Bennett their second consecutive title.
The #73 Park Place Motorsports Porsche of Patrick Lindsey, Spencer Pumpelly and Madison Snow won in GTD, finishing 17th overall. The #44 Magnus Racing Porsche of Andy Lally, John Potter and Robert Renauer finished second in class. Al Carter, Cameron Lawrence and Marc Goossens brought the #93 Viper home in third. The #63 Scuderia Corsa Ferrari of Townsend Bell, Bill Sweedler and Jeff Segal finished fourth and that clinched the GTD title for Bell and Sweedler, who beat #007 Aston Martin driver Christina Nielsen by two points. Nielsen and co-drivers Kuno Wittmer and Brendon Davis finished ninth in class.
The 2016 IMSA season will begin on January 30th at the 24 Hours of Daytona.