DETROIT, Mich. – Kevin Estre, of Lochau, Austria was fastest in the first practice session at Belle Isle, and the Cadillac V-Series Challenge presented by the Metro Detroit Cadillac dealers.

Twenty-seven drivers took to the damp 13-turn, 2.3-mile temporary street course for the 30-minute session – rain had fallen earlier in the morning.

Early in the session, JD Davison, of St. Petersburg, FL , in the No. 33 AE/ReplayXD/NISSAN NISMO GT-R GT3 Nissan GT-R-GT3 was fastest with a 1:36.341. Ten minutes into the session, Davison would better his time with a 1:35.376.

At the 11-minute mark, Robert Thorne, of Littleton, Colo., in the No. 6 K-PAX Racing McLaren 650S GT3 went to the top with 1:34.026, followed by Johnny O’Connell, of Flowery Branch, GA, in the No. 3 Cadillac Racing Cadillac ATS-VR GT3 with a 1:34.527.

At the 15-minute mark, Davison, would again jump into the P1 position with a 1:33.593. Shortly after that at the 17-minute mark, Renger van der Zande, of Nijmegen, The
Netherlands , in the No. 31 EFFORT Racing/World PMO Porsche 911 GT3R eclipsed Davison time with a 1:33.103.

At the 20-minute mark, O’Connell would go to the top with a 1:32.895. On the next lap he went quicker with a 1:32.401

At the 25-minute mark Estre would set the fastest time of the session with a 1:31.945. GT drivers’ points leader coming into the weekend Olivier Beretta of Monte Carlo, Monaco, in the No. 61 Ferrari Ontario/Toronto/Alberta/ Ferrari 458 GT3 Italia was second with a 1:32.075. Davison’s set the third fastest time of the session with a 1:32.122.

Henrique Cisneros, of Miami, FL, in the No. 30 MOMO NGT Motorsport Ferrari 458 GT3 Italia was fastest in GTA with a 132.490, sixth fastest overall in the session.

Of note, James Sofronas, of Pound Ridge, N.Y. will not race at Detroit due to a shop injury suffered this past weekend.

Drivers take to the track next at 12:10 pm Eastern for the second practice session. Follow live timing and scoring at