Rain was the story of the third quarter of the race at the ADAC Zurich Nurburgring 24 Hours as the #4 Black Falcon Mercedes leads after 18 hours of racing.
Dirk Müller is in the Black Falcon but is under pursuit by the #912 Manthey Porsche with Patrick Pilet behind the wheel.
As the morning emerged, the weather started to give teams a headache as the rain stopped – enough for some teams to swap to cut slicks – before it started again in some sections of the track.
It allowed some teams, like the leading Black Falcon Mercedes to try a different strategy, extending their stint to nine laps for the first time during the race. Others, meanwhile were running a series of shorter runs while they tried to get on the right tyres.
There was drama for the #912 early in the morning when Nick Tandy was behind the wheel. While approaching a backmarker, he tagged the back of the car sending them both into a spin, with the Porsche suffering light damage to the front.
Thomas Hetzer had spun Aremberg in the #74 BMW M4 GT4 and to compound the issues for the BMW runners, the #98 Rowe Racing entry suffering a technical issue and ending their run for victory.
The #47 Mercedes retired from second place after Daniel Juncadella crashed at Eiskurve and suffered extensive damage to the left hand side of the car.
The fight for third was between the defending winner, the Land Audi and the Aston Martin Vantage GT3 but that battle ended shortly into the 18th hour when the Audi of Kelvin van der Linde spun into the barrier and had to drive back to the pits on a damaged tyre.
The Glickenhaus SCG003b continues to lead SP-X while the #55 Prosport Porsche leads SP-7. In TCR, the #178 Seat leads the race.
In the TCR category, the pole sitting Hyundai had lost time but was pulling itself back into contention, closing in consistently 10-20 seconds per lap, though is still a lap off the class lead.