The Dyson Lola-Mazda and BMW squads led the way in LMP1 and GT qualifying respectively as the American Le Mans Series resumed at a slightly damp Lime Rock following its break for the Le Mans 24 Hours.
Chris Dyson put his team's #16 car on pole with a 45.708s lap, as series newcomer Steven Kane made a highly promising debut by completing an all-Dyson front row in the returning #20 entry, which the former McLaren AUTOSPORT BRDC Award winner will share with Humaid Al Masaood for the rest of the year.
The Muscle Milk Lola-Aston Martin was third quickest, completing the still-slender LMP1 field.
GT saw domination by BMW, as the Rahal Letterman Lanigan run cars of Jorg Muller and Joey Hand, and Bill Auberlen and Dirk Werner, qualified first and second in class, with the third-placed #45 Flying Lizard Porsche nearly a second adrift. The Corvettes completed the top five.
The Risi Ferrari of Jaime Melo and Toni Vilander has to start at the back following a practice tangle with Auberlen that sidelined the F458 Italia.
Genoa's Elton Julian and Green Hornet's new driver Jaap van Lagen took pole in the LMPC and GTC one-make classes.