Michael Valiante and Richard Westbrook (#90 VisitFlorida.com Racing Corvette DP) led defending series champs Joao Barbosa and Christian Fittipaldi (#5 Action Express Racing Corvette DP) by 7 points coming into Road America, the first of four remaining races. Jan Magnussen and Antonio Garcia (#3 Corvette Racing C7.R) led Dirk Werner and Bill Auberlen (#25 BMW Team RLL Z4 GTE) by just 2 points in GT Le Mans.
Joey Hand (#01 Chip Ganassi Racing Ford-Riley) won overall pole with Earl Bamber (#912 Porsche North America 911 RSR) on point in GTLM. Fittipaldi and Valiante were second and third on the grid with Giancarlo Fisichella (#62 Risi Comptitizione Ferrari 458 Italia) following Bamber in GTLM.
Valiante jumped into P2 behind Hand at the start. By the 2:35 mark (of 2 hr 45 min), Bamber led Garcia and Fishichella in GTLM, second and third changing hands off and on in the first 10 min. between these two and Jon Edwards (#24 BMW). Rain was in the forecast. Valiante took the lead with 2:21 left, Ricky Taylor (#10 Wayne Taylor Racing Corvette DP) passing Hand for second.
The first full-course caution came out moments later on contact between Prototype Challenge and GT Daytona competitors. The race leaders came in under the yellow, Hand having slipped to fourth behind Fittipaldi and the Ganassi crew doing extra work during the stop. The #10 moved to the front with Westbrook taking over for Valiante in the #90.
The GTLM leaders pitted the following lap. Fisichella came out first, followed by Nick Tandy in the #911 Porsche, and Magnussen. Westbrook left the track on the inside of a corner on the restart. With 2 hrs to go, Fittipalsi was challenging Taylor for the lead with Dane Cameron (#31 Action Express) running third. Bamber led GTLM over Fishichella and Tandy.
Cameron pitted with 1:28 left, raising Oz Negri Jr. (#60 Mike Shank Racing Ligier JS P2-Honda) to third on track. Tandy took second in GTLM on track. Fittipaldi came in at 1:24, with Barbosa taking over in the #5. Ricky Taylor pitted from the race lead one lap later, with brother Jordon getting behind the wheel. Negri pitted at the same time. Cameron led the race when the pit cycle was complete.
Tandy spun while running second in GTLM. Fisichella closed and attempted to pass, eventually getting past the Porsche. Tandy headed to the pits moments later. The #912 Porsche came in from the class lead with 1:12 to go, Jorg Bergmeister taking over.
With 1 hr left Cameron led Barbosa and Taylor The #10 suffered right-rear suspension damage and pitted 4 min later , with Negri moving into third. Bergmeister led teammate Patrick Pilet (#911) and Pierre Kaffer (#62 Risi) in GTLM. The #912 made an unscheduled stop 15 min later to secure the hood, but topped off with fuel to finish the race. Pilet pitted one lap later, as did Cameron from the race lead. Barbosa followed on the next lap, but Cameron retained the lead. Kaffer came out with the GTLM point, but didn’t change tires.
Pilet passed Kaffer on track to retake P1 after the pits. The #5 spun near the 15-min mark, but retained second place. The #60 left the track inside 9 min trying to pass a GTD competitor and slipped to fourth, Scott Pruett moving to P3 in the #01. Bergmeister continued to fight Kaffer for the GTLM lead on the race’s penultimate lap.
Cameron led Barbosa by 13 sec during the final lap and took the win with co-driver Eric Curran. Pruett finished third. Bruno Junqueria (#11 RSR Racing with Chris Cumming) won PC. Pilet took the victory in GTLM (after starting from the rear of the field following an engine change), with Bergmeister muscling past Kaffer in the final few turns to make it a Porsche 1-2. Jeroen Bleekemolen and Ben Keating won GTD in the #33 Viper Exchange Racing Dodge Viper.
Valiante and Westbrook led the post-race driver points by 1 over Fittipaldi and Barbosa and 2 over Curran and Cameron. GTLM had Magnussen and Garcia 4 points ahead of Werner and Auberlen and 5 points ahead of Pilet.