1 | 1990 | Suzuka | 26 | Obermaier Primagaz Racing | Porsche 962 C | Porsche PF63TT | Harald Grohs | C1 | 22 | |
2 | 1990 | Monza | 26 | Obermaier Primagaz Racing | Porsche 962 C | Porsche PF63TT | Harald Grohs | C1 | 16 | 15 |
3 | 1990 | Silverstone | 26 | Obermaier Primagaz Racing | Porsche 962 C | Porsche PF63TT | Harald Grohs | C1 | 14 | 10 |
4 | 1990 | Spa-Francorchamps | 26 | Obermaier Primagaz Racing | Porsche 962 C | Porsche PF63TT | Harald Grohs | C1 | 14 | |
5 | 1991 | Nurburgring | 59 | Team Salamin Primagaz | Porsche 962 C | Porsche PF632 | Otto Altenbach | C2 | 2 | 2 |