Sidecar Classification
| Pos | Rider | Passenger | Manufacturer | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | Steve Webster | Gavin Simmons | Krauser | 30 | 47:03.220 | 2 | 20 |
| 2 | Alain Michel | Simon Birchall | Krauser | 30 | +9.465 | 1 | 17 |
| 3 | Darren Dixon | Sean Dixon | LCR-Krauser | 30 | +29.100 | 5 | 15 |
| 4 | Rolf Biland | Kurt Waltisperg | Krauser | 30 | +32.018 | 4 | 13 |
| 5 | Markus Egloff | Urs Egloff | Yamaha | 30 | +40.265 | 8 | 11 |
| 6 | Steve Abbott | Shaun Smith | LCR-Krauser | 30 | +43.759 | 6 | 10 |
| 7 | Ralph Bohnhorst | Bruno Hiller | LCR | 30 | +53.794 | 10 | 9 |
| 8 | Paul Güdel | Charly Güdel | LCR-Krauser | 30 | +1:17.234 | 11 | 8 |
| 9 | René Progin | Gary Irlam | LCR | 30 | +1:26.511 | 9 | 7 |
| 10 | Masato Kumano | Eckhart Rösinger | Yamaha | 30 | +1:26.781 | 13 | 6 |
| 11 | Barry Brindley | Grahame Rose | LCR-Yamaha | 29 | +1 lap | 12 | 5 |
| 12 | Frank Voigt | Holger Voigt | Schuh-Spezial | 28 | +2 laps | 4 | |
| 13 | Alfred Zurbrügg | Martin Zurbrügg | Yamaha | 27 | +3 laps | 15 | 3 |
| Ret | Barry Smith | David Smith | Windle-ADM | 23 | Retired | ||
| Ret | Theo van Kempen | Jan Kuyt | LCR-Krauser | 20 | Retired | ||
| Ret | Tony Baker | Simon Prior | LCR-Krauser | 18 | Retired | ||
| Ret | Derek Brindley | Nick Roche | LCR-Krauser | 15 | Retired | 14 | |
| Ret | Egbert Streuer | Peter Essaff | LCR-Yamaha | 10 | Retired | 3 | |
| Ret | Yoshisada Kumagaya | Bryan Houghton | Krauser | 9 | Retired | 7 | |
| Ret | Werner Kraus | Thomas Schröder | ADM | 9 | Retired | ||
| Ret | Gary Thomas | Gary Twenstrup | Krauser | 3 | Retired | ||
Read more about this topic: 1991 United States Motorcycle Grand Prix