Toyota, ahead of the second-placed No. 7 of Kobayashi. The highest-placed privateer was Menezes' No. 1 Rebellion R13 car in third with teammate Louis Delétraz's No. 3 car fourth. Orecas took the first five places in LMP2 with the quickest lap being a 3 minutes, 29.873 seconds set by High Class Racing's Kenta Yamashita, 0.045 seconds faster than Racing Team Nederland's Giedo van der Garde with Jota Sport's António Félix da Costa third. Aston Martin led both the LMGTE categories with Alex Lynn and Thiim in the No. 97 and No. 95 entries heading the Pro class with Ross Gunn the fastest Amateur class driver in the No. 98 car. Steve Brooks in the No. 89 Project 1 Porsche caused a stoppage with 70 minutes left after beaching in the gravel trap at the entry to Indianapolis corner and required extraction to enable his return to the pit lane. The second three-hour practice session was held later in the day. The No. 8 Toyota once again led the session as Buemi set a 3 minute, 19.719 seconds lap just before the start of the second hour. Conway's sister No. 7 Toyota was almost nine-tenths of a second slower in second. The Rebellions were third and fourth after laps from Menezes and Romain Dumas. Racing Team Nederland's Nyck de Vries set the fastest LMP2 lap of 3 minutes, 27.185 seconds in the final hour. The No. 37 Jackie Chan DC Racing Oreca car of Will Stevens was second-fastest with Félix da Costa third. Aston Martin was overtaken at the top of LMGTE Pro by Christensen's No. 92 Porsche in the last 20 minutes as Lynn's No. 97 Aston Martin took second. Matt Campbell's No. 77 Dempsey-Proton Racing Porsche topped LMGTE Am in the final ten minutes, ahead of Côme Ledogar in Luzich Racing's No. 61 Ferrari. The session saw two stoppages for crashes. Paul Lafargue crashed his IDEC Sport car exiting the second Mulsanne Straight chicane before the first hour's end. Lafargue's teammate Dwight Merriman in the No. 17 car had a heavy accident exiting the Porsche Curves an hour later. Merriman sustained a back injury, and the FIA Medical Delegate deemed him unfit to drive, leading to Porsche's Patrick Pilet replacing him. The third session lasted for four hours and occurred at night, providing drivers their first opportunity to acclimatise to the dark before the race. Deletraz's No. 3 Rebellion