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.[1]
Class winners in bold. Cars failing to complete 75% of the winner's distance marked as Not Classified (NC).
| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
|---|---|---|---|---|---|---|---|
| Engine | |||||||
| 1 | C1 | 2 |  Rothmans Porsche | Hans-Joachim Stuck Derek Bell | Porsche 962C | 253 | |
| Porsche Type-935 2.6 L Turbo Flat-6 | |||||||
| 2 | C1 | 1 | Rothmans Porsche | Jochen Mass Jacky Ickx | Porsche 962C | 253 | |
| Porsche Type-935 2.6 L Turbo Flat-6 | |||||||
| 3 | C1 | 52 | TWR Jaguar |  Jean-Louis Schlesser Mike Thackwell Martin Brundle | Jaguar XJR-6 | 234 | |
| Jaguar 6.2 L V12 | |||||||
| 4 | C1 | 11 | Porsche Kremer Racing |  Ludwig Heimrath Sr. Ludwig Heimrath, Jr.Kees Kroesemeijer | Porsche 956 | 234 | |
| Porsche Type-935 2.6 L Turbo Flat-6 | |||||||
| 5 | C2 | 70 | Spice Engineering | Gordon Spice Ray Bellm | Spice-Tiga GC85 | 231 | |
| Ford Cosworth DFL 3.3 L V8 | |||||||
| 6 | C2 | 74 | Gebhardt Motorsport | Frank Jelinski John Graham | Gebhardt JC853 | 225 | |
| Ford Cosworth DFV 3.0 L V8 | |||||||
| 7 | GTP | 18 | Bieri Racing Fomfor Racing | "Fomfor" Uli Bieri Matt Gysler | Sauber C7 | 211 | |
| Chevrolet 6.0 L V8 | |||||||
| 8 | C2 | 88 | Ark Racing | David Andrews Max Payne | Ceekar 83J | 203 | |
| Ford Cosworth BDX 2.0 L I4 | |||||||
| 9 | GTO | 165 |  Gerry English | Gerry English Jerry Thompson | Chevrolet Camaro | 199 | |
| Chevrolet 6.0 L V8 | |||||||
| 10 | GTU | 154 | Zwiren Racing | Steve Zwiren Peter Dawe Robert Peters | Mazda RX-7 | 184 | |
| Mazda 13B 1.3 L 2-Rotor | |||||||
| 11 DSQ† | C2 | 80 |  Carma F.F. | Carlo Facetti Martino Finotto Jean-Pierre Frey | Alba AR6 | 218 | |
| Carma FF 1.9 L Turbo I4 | |||||||
| 12 NC | C2 | 82 | Grifo Autoracing | Pasquale Barberio Maurizio Gellini | Alba AR3 | 157 | |
| Ford Cosworth DFL 3.3 L V8 | |||||||
| 13 NC | C1 | 34 | Cosmik Racing | Christian Danner Costas Los  Mikael Nabrink | March 84G | 148 | |
| Porsche Type-956 2.6 L Turbo Flat-6 | |||||||
| 14 NC | C2 | 98 | Roy Baker Promotions | Joe DeMarco Chuck Grantham | Tiga GC285 | 146 | |
| Ford Cosworth BDT 1.8 L Turbo I4 | |||||||
| 15 DNF | GTO | 153 | No Team Name | Rudy Bartling Fritz Hochreuter | Porsche Carrera RSR | ? | 125 |
| Porsche 3.0 L Flat-6 | |||||||
| 16 DNF | GTO | 139 | R & H Racing | Rainer Brezinka Jack Burnett John Centano | Porsche Carrera RSR | ? | 103 |
| Porsche 3.0 L Flat-6 | |||||||
| 17 DNF | C1 | 10 | Porsche Kremer Racing | Manfred Winkelhock Marc Surer | Porsche 962C | 69 | |
| Porsche Type-935 2.6 L Turbo Flat-6 | |||||||
| 18 DNF | C2 | 100 | John Barlett Racing | Stanley Dickens Robin Smith Max Cohen-Olivar | Chevron B62 | 27 | |
| Ford Cosworth DFL 3.3 L V8 | |||||||
| 19 DNF | C1 | 51 | TWR Jaguar | Martin Brundle Mike Thackwell | Jaguar XJR-6 | 12 | |
| Jaguar 6.2 L V12 |
† - #80 Carma F.F. was disqualified after completing the final lap of the race too slowly.