In the Prototype Challenge presented by Continental Tire (PC) class, Colin Braun earned his fourth consecutive pole and fifth of the season, edging Bruno Junqueira by 0.082 seconds with a lap of 1:57.630 (123.887 mph) in the No. 05 Composite Resources ORECA FLM09 for CORE autosport. Junqueira qualified second at 1:57.712 (123.800 mph) in the No. 9 RSR Racing entry.
Tristan Nunez originally took third on the PC grid in the No. 18 Performance Tech Motorsports entry, but he was also moved to the rear of the field due to a tire change. Renger van der Zande moved up to third in the No. 81 dress-for-less.com ORECA FLM09 entry for DragonSpeed at 1:57.912 (123.590 mph).
Spencer Pumpelly picked up his second GTC pole of the season and third of his ALMS career in the No. 45 Venezuela/eSilicon Porsche 911 GT3 Cup. Pumpelly laid down his best lap with four minutes left in the session, 2:11.931 (110.458 mph), knocking then-polesitter Damien Faulkner out of the top spot.
“We knew yesterday we had a good car, but it was tough to stream a good lap to show it,” Pumpelly said. “I have to thank [teammate] Nelson Canache Jr. He was looking at the kink and saying ‘I am going five miles per hour faster through here than you.’ Based on his inspiration, I think I sucked it up and carried more speed through there.”
Sean Edwards drove the No. 30 MOMO Porsche 911 GT3 Cup to second in GTC in the final minutes at 2:12.386 (110.078 mph), with Jan Heylen third in the No. 11 Hertz Porsche 911 GT3 Cup, 2:12.403 (110.064 mph).
GTC points leader Jeroen Bleekemolen qualified sixth in the No. 22 WeatherTech Porsche 911 GT3 Cup. Bleekemolen is seeking his fourth consecutive Road America GTC win. He can become the first driver in ALMS GTC class history to win at the same venue four times in a row.