The track was dry as qualifying began, but rain was falling to make conditions extra sketchy.
Bourdais started the ball rolling with a 1m11.979s lap, but this was soon bettered by Albuquerque’s Wayne Taylor Racing Acura ARX-05. The Portuguese produced a 1m11.481s, then 1m10.751s and finally 1m10.661s.
But Bourdais wouldn’t be denied, the Frenchman unleashing a 1m10.439s to usurp Albuquerque by 0.222s and snare pole in the Cadillac DPi-V.R he'll share with Renger van der Zande.
Oliver Jarvis took third in the Meyer Shank Racing Acura, producing a final lap of 1m10.791s. Alex Lynn will start fourth in the second CGR car ahead of the remaining Cadillac drivers, Tristan Nunez (Action Express) and Tristan Vautier (JDC-Miller).
Patrick Kelly took LMP2 pole for PR1 Mathiasen Motorsports on 1m14.340s, ahead of the sister team car of Steven Thomas, who escaped a wild early spin.
Jarrett Andretti took LMP3 pole for Andretti Autosports, ahead of Josh Sarchet (MLT Motorsports) and Dan Goldburg (Performance Tech).
Snow takes GTD pole for BMW
In GTD, where there is no Pro class this weekend, the track was damp at the start but dried out quickly.
Paul Miller Racing’s Madison Snow led the way when it mattered on 1m20.525s, two tenths clear of Stevan McAleer (Korthoff Mercedes), Roman De Angelis (Heart of Racing Aston Martin) and early pacesetter Robby Foley (Turner BMW).
Russell Ward (Winward Mercedes) will start fifth, ahead of Vasser Sullivan Lexus pair Frankie Montecalvo and Richard Heistand, the latter escaping the gravel after an early spin.
