| 1984 | Austrian Grand Prix · Grand Prix | Juchem | 23 | | Classified |
| 1984 | German Grand Prix · Grand Prix | Juchem | 25 | | Classified |
| 1984 | Dutch TT · Grand Prix | Juchem | — | | DNQ |
| 1985 | German Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1985 | Austrian Grand Prix · Grand Prix | Honda | 21 | | Classified |
| 1985 | Dutch TT · Grand Prix | Honda | 14 | | Classified |
| 1985 | Belgian Grand Prix · Grand Prix | Honda | 22 | | Classified |
| 1986 | Spanish Grand Prix · Grand Prix | HG-RS500 | 18 | | Classified |
| 1986 | Italian Grand Prix · Grand Prix | HG-RS500 | 14 | | Classified |
| 1986 | German Grand Prix · Grand Prix | HG-RS500 | 11 | | Classified |
| 1986 | Austrian Grand Prix · Grand Prix | HG-RS500 | 13 | | Classified |
| 1986 | Yugoslavian Grand Prix · Grand Prix | HG-RS500 | — | | Ret |
| 1986 | Dutch TT · Grand Prix | HG-RS500 | 16 | | Classified |
| 1986 | Belgian Grand Prix · Grand Prix | HG-RS500 | — | | Ret |
| 1986 | British Grand Prix · Grand Prix | HG-RS500 | 19 | | Classified |
| 1986 | Swedish Grand Prix · Grand Prix | HG-RS500 | 16 | | Classified |
| 1986 | San Marino Grand Prix · Grand Prix | HG-RS500 | — | | Ret |
| 1987 | German Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | Italian Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1987 | Austrian Grand Prix · Grand Prix | Honda | 18 | | Classified |
| 1987 | Dutch TT · Grand Prix | Honda | — | | Ret |
| 1987 | French Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1987 | British Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | Swedish Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1987 | San Marino Grand Prix · Grand Prix | Honda | 16 | | Classified |
| 1988 | Japanese Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Italian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | German Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Austrian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1988 | Dutch TT · Grand Prix | Honda | — | | Ret |
| 1988 | Belgian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | French Grand Prix · Grand Prix | Honda | 20 | | Classified |
| 1988 | Czechoslovak Grand Prix · Grand Prix | Honda | 19 | | Classified |