After first practice

Separate dramas affected the morning run, which was held in gloomy but dry conditions, for both factory-run Porsche 911 RSR-19s running in the GTE-Pro class.
The No. 92 car driven by Michael Christensen stopped with a left drive shaft failure early in the second hour, causing a slow zone at Tertre Rouge.

Around an hour later, the sister No. 91 Porsche went off at Mulsanne, with Gianmaria Bruni rejoining the track before parking up a few turns later at Indianapolis.
The car is understood to have locked up significantly into Mulannse. It was later transported back to the paddock with a deflated left-front Michelin tire.
Porsche placed third and fifth in the GTE-Pro times as Corvette Racing led the way.

Tommy Milner reeled off the 3:54.690 that put the No. 64 Chevrolet Corvette C8.R on top and was backed up by Nicky Catsburg who banked a 3:54.766 in the No. 63 machine.
Milner stopped on track in the closing stages due to his car running out of fuel.

Before his incident, Bruni came through in third on a 3:55.467, ahead of the independent Riley Motorsports Ferrari 488 GTE Evo which was Maranello’s quickest car in Pro