1 | 5 | Belgian Grand Prix | 6 | Nelson Piquet | Williams FW11 | Honda RA166-E | 1 | 19 |
2 | 6 | Canadian Grand Prix | 5 | Nigel Mansell | Williams FW11 | Honda RA166-E | 1 | 1 |
3 | 9 | British Grand Prix | 6 | Nelson Piquet | Williams FW11 | Honda RA166-E | 1 | 2 |
4 | 16 | Australian Grand Prix | 5 | Nigel Mansell | Williams FW11 | Honda RA166-E | 1 | 12 |