The No. 25 BMW M Team RLL BMW M Hybrid V8 won the Sahlen’s Six Hours of The Glen on Sunday after the No. 6 Porsche Penske Motorsport Porsche 963 was assessed a penalty in postrace technical inspection.

Driving the No. 6 Porsche, Mathieu Jaminet made a daring pass of Connor De Phillippi in the No. 25 BMW for the lead while both cars battled through lapped traffic with just five minutes remaining in the historic six-hour IMSA WeatherTech SportsCar Championship race at Watkins Glen International. That’s the way the cars finished as a full-course caution came out a lap later and the race finished under yellow.

imsa weathertech results watkins glen
Click to see FULL UPDATED final IMSA results from Watkins Glen.

However, in postrace inspection, the No. 6 Porsche was found with a skid block measuring less than the permitted minimum thickness and was moved to the rear of the Grand Touring Prototype (GTP) finishing order, elevating the No. 25 BMW to victory.

It is the first win for the German manufacturer in the modern GTP era, meaning all four marques participating in the hybrid-electrified class in this debut season have now won in the first five races. The victory is the sixth of De Phillippi’s WeatherTech Championship career. Co-driver Nick Yelloly picked up his maiden series win.

Finishing second in the revised podium are the No. 31 Whelen Engineering Cadillac Racing Cadillac V-Series.R in second place with drivers Pipo Derani, Alexander Sims and Jack Aitken. Filling out the revised podium were Tom Blomqvist, Colin Braun and the No. 60 Meyer Shank Racing with Curb-Agajanian Acura ARX-06 in third place.

Nine GTP cars were among the record-tying field of 57 entries for the race, the fifth of the 2023 WeatherTech Championship season, but several GTPs encountered issues during the race.

The No. 24 BMW crashed into the Turn 1 barrier on the opening lap and was eliminated. The No. 01 Cadillac Racing Cadillac sustained damage an hour into the race after spinning while trying to avoid a slower GT Daytona (GTD) car. The No. 7 Porsche 963 led 35 laps early before heading to the garage for repairs to its hybrid power system. And the No. 10 Konica Minolta Acura ARX-06 fell from contention when it lost a wheel assembly on track and had to slowly make its way to pit lane for a replacement.

Porsche Penske Motorsport is appealing the decision that cost the team the race win.

“Following post-race inspection at Watkins Glen International, IMSA has penalized the No. 6 entry in the Sahlen’s Six Hours of the Glen citing that the front skid wear of the No. 6 Porsche 963 was less than one millimeter outside the legal tolerance. The rear skid wear was noted to be well within the legal tolerance. Porsche Penske Motorsport plans to collect all of the data and follow the protest procedures.”