The 1985 Budweiser GT was the sixth round of the 1985 World Endurance Championship. Several teams from the Camel GT Championship also participated, under the GTP, GTO, and GTU classes. It took place at Mosport Park, Canada on August 11, 1985.
In the early portions of the race, Manfred Winkelhock was driving the Kremer Racing Porsche 962C after taking over from teammate Marc Surer. At the beginning of the car's 69th lap, Winkelhock's Porsche went off course during the long downhill Turn 2. The car hit the concrete barrier at the bottom of the hill head-on. Caution came out immediately and lasted for 56 minutes as safety crews attempted to extract Winkelhock from the wreckage.
Winkelhock was flown by medical helicopter to Sunnybrook Medical Centre near Toronto suffering from severe head trauma while the race resumed. Winkelhock died the following day after failing to recover from surgery.
Class winners in bold. Cars failing to complete 75% of the winner's distance marked as Not Classified (NC).
† - #80 Carma F.F. was disqualified after completing the final lap of the race too slowly.