all 50 entries were involved in three days of testing divided into seven sessions held at the circuit from january 5–7. joão barbosa set the fastest time early in the first day's running with a time of 1 minute and 37.266 seconds for the 5 mustang sampling racing cadillac. co-driver filipe albuquerque later improved in the second session to a 1-minute and 37.196 seconds lap. the fastest lmp2 lap came from colin braun's no. 54 core oreca who was second-fastest overall. the no. 10 wayne taylor cadillac of renger van der zande was third. tristan vautier set the fourth-fastest lap time for spirit of daytona in its no. 90 cadillac. ho-pin tung in the no. 78 jackie chan oreca 07 rounded out the top five. laurens vanthoor led gtlm in the no. 912 porsche 911 rsr with a 1-minute and 44.065 seconds lap in the second session, and teammate nick tandy's sister car was third. they were separated by richard westbrook's no. 67 chip ganassi ford. gtd was topped by the no. 11 grasser lamborghini of rolf ineichen and later franck perera. they were ahead of matteo cairoli's no. 59 manthey porsche.