Harry Tincknell led the way in an extended warmup session for IMSA WeatherTech SportsCar Championship competitors ahead of this afternoon’s Mobil 1 Sportscar Grand Prix at Canadian Tire Motorsport Park.
The Englishman reeled off a 1:05.802 in the No. 55 Team Joest Mazda RT24-P in the closing stages of the 30-minute session to edge out early pacesetter Felipe Nasr by 0.041 seconds.
The pair of Acura Team Penske entries were third and fourth, meanwhile.
Richard Westbrook and Scott Hargrove were quickest in GT Le Mans and GT Daytona for Ford Chip Ganassi Racing and Pfaff Motorsports, respectively.
The No. 38 Performance Tech Motorsports Oreca 07 Gibson of Kyle Masson led the way in LMP2.
The session, originally scheduled for 20 minutes, was extended by 10 minutes following track work overnight to repair cracks in the surface in Turns 2 and 5.
Both areas have been patched after issues over the course of Friday and Saturday.
“They did a really mega job,” Meyer Shank Racing’s Katherine Legge told IMSA Radio. “They’ve done a nice job in [Turns] 2 and 5.”
All cars except for the No. 54 CORE autosport Nissan DPi and No. 76 Compass Racing McLaren 720S GT3 turned laps, with CORE not electing to run, while there was an issue with the door on the McLaren.
The only notable incident of the session was a spin by the No. 911 Porsche 911 RSR of Nick Tandy, who managed to keep the GTLM championship-leading car off of the wall.
The Mobil 1 Sportscar Grand Prix gets underway at 1 p.m. EDT with live coverage on CNBC and IMSA Radio.