Boet van Dulmen Motorcycle Grand Prix results Motorcycle Grand Prix results

| Year_ | Class_ | Team | Points | Rank_ | Wins |
|---|---|---|---|---|---|
| 1975 | 350cc | Yamaha | 3 | 36th | 0 |
| 1976 | 250cc | Yamaha | 4 | 26th | 0 |
| 1976 | 350cc | Yamaha | 6 | 24th | 0 |
| 1976 | 500cc | Suzuki | 9 | 25th | 0 |
| 1977 | 500cc | Suzuki | 3 | 27th | 0 |
| 1978 | 500cc | Suzuki | 15 | 13th | 0 |
| 1979 | 500cc | Suzuki | 50 | 6th | 1 |
| 1980 | 500cc | Yamaha | 10 | 14th | 0 |
| 1981 | 500cc | Yamaha | 64 | 6th | 0 |
| 1982 | 500cc | Yamaha | 23 | 12th | 0 |
| 1983 | 500cc | Suzuki | 17 | 11th | 0 |
| 1984 | 500cc | Suzuki | 25 | 8th | 0 |
| 1985 | 500cc | Honda | 18 | 10th | 0 |
| 1986 | 500cc | Honda | 8 | 12th | 0 |