Sidecar Classification
| Pos | Rider | Passenger | Manufacturer | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | Steve Webster | Gavin Simmons | Krauser | 26 | 35:08.085 | 2 | 20 |
| 2 | Egbert Streuer | Peter Essaff | LCR-Yamaha | 26 | +14.440 | 5 | 17 |
| 3 | Paul Güdel | Charly Güdel | LCR-Krauser | 26 | +26.431 | 13 | 15 |
| 4 | Darren Dixon | Sean Dixon | LCR-Krauser | 26 | +30.300 | 10 | 13 |
| 5 | Yoshisada Kumagaya | Bryan Houghton | Krauser | 26 | +45.188 | 9 | 11 |
| 6 | Barry Brindley | Grahame Rose | LCR-Yamaha | 26 | +50.688 | 14 | 10 |
| 7 | Masato Kumano | Eckhart Rösinger | LCR-Yamaha | 26 | +50.943 | 8 | 9 |
| 8 | Ralph Bohnhorst | Bruno Hiller | Bohnhorst | 26 | +57.003 | 7 | 8 |
| 9 | Alfred Zurbrügg | Martin Zurbrügg | LCR-Yamaha | 26 | +1:08.810 | 6 | 7 |
| 10 | Theo van Kempen | Jan Kuyt | LCR-Krauser | 25 | +1 lap | 6 | |
| 11 | René Progin | Gary Irlam | LCR | 25 | +1 lap | 5 | |
| 12 | Tony Wyssen | Geral de Haas | LCR | 25 | +1 lap | 4 | |
| 13 | Tony Baker | Simon Prior | LCR-Krauser | 25 | +1 lap | 3 | |
| 14 | Markus Bösiger | Peter Markwalder | ADM | 25 | +1 lap | 2 | |
| 15 | Klaus Klaffenböck | Christian Parzer | LCR | 24 | +2 laps | 11 | 1 |
| 16 | Markus Egloff | Urs Egloff | Yamaha | 24 | +2 laps | 4 | |
| Ret | Steve Abbott | Shaun Smith | LCR-Krauser | 22 | Retired | 12 | |
| Ret | Alain Michel | Simon Birchall | Krauser | 12 | Retired | 3 | |
| Ret | Rolf Biland | Kurt Waltisperg | LCR-ADM | 3 | Retired | 1 | |
| Ret | Barry Smith | David Smith | Windle-ADM | 2 | Retired | 15 | |
| DNQ | Derek Brindley | Nick Roche | LCR | ||||
| DNQ | Kenny Howles | C. Mugnari | Krauser | ||||
| DNQ | Hans Hügli | Adolf Hänni | LCR | ||||
| DNQ | Gary Thomas | Michel van Puyvelde | Krauser | ||||
| DNQ | Reiner Kosta | Jurg Egli | Yamaha | ||||
| DNQ | Frank Voigt | Holger Voigt | Schuh-Spezial | ||||
| DNQ | Werner Kraus | Thomas Schröder | ADM | ||||
Read more about this topic: 1991 Italian Motorcycle Grand Prix