PORSCHE RACING HISTORYKlaus Ludwig (D)
1989
5 February 1989 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 962 C | 962C-139 | GTP | Klaus Ludwig (D)/James Weaver (GB)/Sarel van der Merwe (ZA) | Texaco Havoline Star Bayside Motorsports (USA) | 4th | 4th | 5th | 600 laps |
5 March 1989 - Miami 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 962 C | 962C-139 | GTP | Klaus Ludwig (D)/James Weaver (GB) | Bayside Racing/Bruce Leven (USA) | 8th | 8th | 4th | 123 laps |