1 | 1998 | Laguna Seca | 87 | Seikel Motorsport | Porsche 911 GT2 | Porsche PF636T | Gerhard Marchner/Manfred Jurasz/ | GT2 | 20 | 9 |
2 | 2000 | Silverstone | 68 | Seikel Motorsport | Porsche 911 GT3 R | Porsche PF636 | Max Cohen-Olivar | N-GT | 11 | 7 |
3 | 2001 | Spa-Francorchamps | 79 | Seikel Motorsport | Porsche 996 GT3 RS | Porsche M96/77 | Philip Collin/Stefano Buttiero/ | N-GT | 4 | |
4 | 2003 | Spa-Francorchamps | 73 | Seikel Motorsport | Porsche 996 GT3 RS | Porsche M96/72 | Philip Collin/Tim Bergmeister/John Lloyd/ | N-GT | 7 |