PORSCHE RACING HISTORYBob Bergstrom (USA)
1985
23 March 1985 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 79 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720006 | GTU | Elliott Forbes-Robinson (USA)/Tom Winters (USA)/Bob Bergstrom (USA) | Whitehall Motorsports (USA) | 54th | 11th | 26th | 65 laps - Brakes |
14 April 1985 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 79 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720006 | GTU | Bob Bergstrom (USA) | Whitehall Motorsports (USA) | 49th | 12th | 27th | 5 laps - DNF |
28 April 1985 - Riverside 600 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 79 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720006 | GTU | Bob Bergstrom (USA) | Whitehall Motorsports (USA) | 25th | 6th | 38th | 94 laps - DNF |