| 1981 | Großer Preis von Deutschland · Grand Prix | Suzuki | — | | Ret |
| 1981 | Gran Premio delle Nazioni · Grand Prix | Suzuki | 17 | | Classified |
| 1981 | Grand Prix de France Moto · Grand Prix | Suzuki | — | | Ret |
| 1981 | Dutch TT Assen · Grand Prix | Suzuki | — | | DNQ |
| 1981 | Grand Prix Moto · Grand Prix | Suzuki | 13 | | Classified |
| 1981 | Gran Premio di San Marino · Grand Prix | Suzuki | 10 | | Classified |
| 1981 | Marlboro British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1982 | Austrian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1982 | Dutch TT · Grand Prix | Suzuki | — | | DNQ |
| 1982 | Belgian Grand Prix · Grand Prix | Suzuki | — | | DNQ |
| 1982 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1983 | French Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1983 | Nations Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1983 | German Grand Prix · Grand Prix | Suzuki | 17 | | Classified |
| 1983 | Spanish Grand Prix · Grand Prix | Suzuki | 10 | | Classified |
| 1983 | Austrian Grand Prix · Grand Prix | Suzuki | 12 | | Classified |
| 1983 | Yugoslavian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1983 | Dutch TT · Grand Prix | Suzuki | — | | Ret |
| 1983 | Belgian Grand Prix · Grand Prix | Suzuki | 11 | | Classified |
| 1983 | British Grand Prix · Grand Prix | Suzuki | 11 | | Classified |
| 1983 | Swedish Grand Prix · Grand Prix | Suzuki | 11 | | Classified |
| 1983 | San Marino Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1984 | Italian Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1984 | Spanish Grand Prix · Grand Prix | Honda | 10 | | Classified |
| 1984 | Austrian Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1984 | German Grand Prix · Grand Prix | Honda | 8 | | Classified |
| 1984 | French Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1984 | Dutch TT · Grand Prix | Honda | 13 | | Classified |
| 1984 | Belgian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1984 | British Grand Prix · Grand Prix | Honda | 13 | | Classified |
| 1984 | Swedish Grand Prix · Grand Prix | Honda | 9 | | Classified |
| 1984 | San Marino Grand Prix · Grand Prix | Honda | 21 | | Classified |
| 1985 | South African Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1985 | Spanish Grand Prix · Grand Prix | Honda | — | | DNS |
| 1985 | German Grand Prix · Grand Prix | Honda | 30 | | Classified |
| 1985 | Italian Grand Prix · Grand Prix | Honda | — | | DNF |
| 1985 | Austrian Grand Prix · Grand Prix | Honda | 23 | | Classified |
| 1985 | British Grand Prix · Grand Prix | Honda | — | | DNF |