Sidecar Classification
| Pos | Rider | Passenger | Manufacturer | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | Steve Webster | Gavin Simmons | Krauser | 22 | 41:53.700 | 2 | 20 |
| 2 | Paul Güdel | Charly Güdel | LCR-Krauser | 22 | +4.062 | 4 | 17 |
| 3 | Steve Abbott | Shaun Smith | LCR-Krauser | 22 | +4.380 | 5 | 15 |
| 4 | Rolf Biland | Kurt Waltisperg | LCR-ADM | 22 | +4.594 | 3 | 13 |
| 5 | Yoshisada Kumagaya | Bryan Houghton | Krauser | 22 | +35.154 | 8 | 11 |
| 6 | Markus Egloff | Urs Egloff | Yamaha | 22 | +50.510 | 6 | 10 |
| 7 | Derek Brindley | Nick Roche | LCR | 22 | +53.098 | 12 | 9 |
| 8 | Ralph Bohnhorst | Geral de Haas | LCR | 22 | +1:18.654 | 8 | |
| 9 | Masato Kumano | Eckhart Rösinger | LCR-Yamaha | 22 | +1:19.320 | 7 | |
| 10 | Tony Wyssen | Killian Wyssen | LCR-Krauser | 22 | +1:26.836 | 13 | 6 |
| 11 | Theo van Kempen | Jan Kuyt | LCR-Krauser | 22 | +1:28.089 | 15 | 5 |
| 12 | Klaus Klaffenböck | Christian Parzer | LCR | 22 | +1:50.872 | 14 | 4 |
| 13 | Werner Kraus | Thomas Schröder | ADM | 22 | +1:58.758 | 3 | |
| 14 | Tony Baker | Simon Prior | LCR-Krauser | 22 | +1:58.834 | 2 | |
| 15 | René Progin | Gary Irlam | LCR | 21 | +1 lap | 1 | |
| 16 | Kenny Howles | Alan Langton | Krauser | 21 | +1 lap | ||
| 17 | Egbert Streuer | Peter Essaff | LCR-Yamaha | 21 | +1 lap | 10 | |
| 18 | Alain Michel | Simon Birchall | Krauser | 21 | +1 lap | 1 | |
| 19 | Billy Gällros | Peter Berglund | Krauser | 21 | +1 lap | ||
| 20 | Gary Thomas | Michel van Puyvelde | Krauser | 21 | +1 lap | ||
| 21 | Alfred Zurbrügg | Martin Zurbrügg | LCR-Yamaha | 20 | +2 laps | 7 | |
| Ret | Darren Dixon | Sean Dixon | LCR-Krauser | 3 | Retired | 11 | |
| Ret | Barry Brindley | Tony Atkinson | LCR-Yamaha | 2 | Retired | 9 | |
| Ret | Markus Bösiger | Bruno Hiler | ADM | 1 | Retired | ||
| Ret | Barry Smith | David Smith | Windle-ADM | 1 | Retired | ||
| DNQ | Frank Voigt | Holger Voigt | Schuh-Spezial | ||||
| DNQ | Reiner Kosta | Jurg Egli | Yamaha | ||||
Read more about this topic: 1991 Spanish Motorcycle Grand Prix