DAYTONA BEACH, Fla. – Manthey will have a special livery and a special lineup for its No. 911 Porsche 911 GT3 R (992) to conclude this year’s IMSA WeatherTech SportsCar Championship season as part of its IMSA Michelin Endurance Cup program.
Its usual green and yellow “Grello” livery will flip to orange for a special cause. Meanwhile, 2025 WeatherTech Championship GTP champion Mathieu Jaminet will make his return to IMSA at Motul Petit Le Mans at Michelin Raceway Road Atlanta.
Jaminet will share the No. 911 with Thomas Preining and Klaus Bachler in Grand Touring Daytona Pro (GTD PRO), standing in for Ricardo Feller. Manthey makes its fifth start as part of its wider IMSA Michelin Endurance Cup program this year.
Jaminet won both the 2025 IMSA and 2022 IMSA GTD PRO crowns with Matt Campbell. Campbell, too, is due to make his IMSA return in his last scheduled start with Porsche Penske Motorsport sharing the No. 6 Porsche 963 with Kevin Estre and the returning Laurens Vanthoor.
As for the livery, here’s more details, confirmed via a Manthey social post:
One Color. One Cause. Racing to raise awareness.
For the IMSA season finale, we’re borrowing one of our partner Viessmann’s most recognizable assets: its signature orange. Combined with our 30 Years special streamline livery, our No. 911 Porsche will carry the color for one race weekend, not to draw attention to ourselves, but to a cause far more important.
With Klaus Bachler, Mathieu Jaminet and Thomas Preining behind the wheel at Michelin Raceway Road Atlanta, every lap counts. As part of this initiative, @Viessmann will donate 50.000,00€ to the German Cancer Research Center (DKFZ) and Austin Hatcher Foundation.
Together, we want to use the platform of motorsport to help raise awareness for a cause that affects millions of people around the world.
Learn more about the organizations supported through this initiative via the link in our bio.