# 1991 Australian motorcycle Grand Prix

The 1991 Australian motorcycle Grand Prix was the second round of the 1991 Grand Prix motorcycle racing season. The race took place on the weekend of 5–7 April 1991 at Eastern Creek Raceway in Sydney, New South Wales. It was the first of six times the Australian motorcycle Grand Prix would be held at Eastern Creek before moving permanently back to Phillip Island in 1997.

## 500 cc classification

| Pos. | Rider | Team | Manufacturer | Laps | Time | Grid | Points |
| 1 | Wayne Rainey | Marlboro Team Roberts | Yamaha | 32 | 49:14.411 | 1 | 20 |
| 2 | Michael Doohan | Rothmans Honda Team | Honda | 32 | +2.549 | 3 | 17 |
| 3 | John Kocinski | Marlboro Team Roberts | Yamaha | 32 | +9.457 | 4 | 15 |
| 4 | Wayne Gardner | Rothmans Honda Team | Honda | 32 | +24.437 | 2 | 13 |
| 5 | Kevin Schwantz | Lucky Strike Suzuki | Suzuki | 32 | +29.177 | 6 | 11 |
| 6 | Eddie Lawson | Cagiva Corse | Cagiva | 32 | +31.155 | 5 | 10 |
| 7 | Jean-Philippe Ruggia | Sonauto Yamaha Mobil 1 | Yamaha | 32 | +37.849 | 9 | 9 |
| 8 | Alex Barros | Cagiva Corse | Cagiva | 32 | +59.646 | 7 | 8 |
| 9 | Adrien Morillas | Sonauto Yamaha Mobil 1 | Yamaha | 32 | +59.702 | 10 | 7 |
| 10 | Didier de Radiguès | Lucky Strike Suzuki | Suzuki | 32 | +1:01.652 | 12 | 6 |
| 11 | Kevin Magee | Team Roberts | Suzuki | 32 | +1:20.599 | 11 | 5 |
| 12 | Doug Chandler | Roberts B Team | Yamaha | 32 | +1:28.598 | 13 | 4 |
| 13 | Eddie Laycock | Millar Racing | Yamaha | 31 | +1 lap | 15 | 3 |
| 14 | Cees Doorakkers | HEK-Baumachines | Honda | 30 | +2 laps | 16 | 2 |
| 15 | Steve Spray | Team Roton | Roton | 29 | +3 laps | 17 | 1 |
| 16 | Niggi Schmassman | Schmassman Technotron | Honda | 28 | +4 laps | 18 | |
| Ret | Juan Garriga | Ducados Yamaha | Yamaha | 13 | Retired | 8 | |
| Ret | Sito Pons | Campsa Honda Team | Honda | 12 | Retired | 14 | |

## 250 cc classification

| Pos | Rider | Manufacturer | Laps | Time | Grid | Points |
| 1 | Luca Cadalora | Honda | 28 | 44:19.673 | 1 | 20 |
| 2 | Helmut Bradl | Honda | 28 | +0.269 | 2 | 17 |
| 3 | Carlos Cardús | Honda | 28 | +11.833 | 3 | 15 |
| 4 | Wilco Zeelenberg | Honda | 28 | +15.394 | 4 | 13 |
| 5 | Loris Reggiani | Aprilia | 28 | +26.882 | 5 | 11 |
| 6 | Pierfrancesco Chili | Aprilia | 28 | +56.839 | 7 | 10 |
| 7 | Andreas Preining | Aprilia | 28 | +1:06.408 | 9 | 9 |
| 8 | Jochen Schmid | Honda | 28 | +1:14.223 | 10 | 8 |
| 9 | Paolo Casoli | Yamaha | 28 | +1:17.967 | 15 | 7 |
| 10 | Carlos Lavado | Yamaha | 28 | +1:18.302 | 13 | 6 |
| 11 | Jean-Pierre Jeandat | Honda | 28 | +1:30.197 | | 5 |
| 12 | Bernard Hänggeli | Aprilia | 28 | +1:35.860 | | 4 |
| 13 | Frédéric Protat | Aprilia | 27 | +1 lap | | 3 |
| 14 | Urs Jucker | Yamaha | 27 | +1 lap | | 2 |
| 15 | Kevin Mitchell | Yamaha | 27 | +1 lap | | 1 |
| 16 | Stephen Whitehouse | Yamaha | 27 | +1 lap | | |
| 17 | Jaime Mariano | Aprilia | 27 | +1 lap | | |
| 18 | David Horton | Yamaha | 27 | +1 lap | | |
| 19 | Gavin Johnston | Yamaha | 27 | +1 lap | | |
| 20 | Warren Palesy | Yamaha | 27 | +1 lap | | |
| 21 | Michael Haisman | Yamaha | 27 | +1 lap | | |
| 22 | Scott Buckley | Yamaha | 26 | +2 laps | | |
| Ret | Stefan Prein | Honda | 26 | Retired | 14 | |
| Ret | Masahiro Shimizu | Honda | 21 | Retired | 12 | |
| Ret | Jim Filice | Yamaha | 21 | Retired | | |
| Ret | Darren Milner | Yamaha | 14 | Retired | | |
| Ret | Martin Wimmer | Suzuki | 13 | Retired | 6 | |
| Ret | Alberto Puig | Yamaha | 4 | Retired | | |
| Ret | Trevor Manley | Yamaha | 3 | Retired | | |
| Ret | Àlex Crivillé | Honda | 3 | Retired | 11 | |
| Ret | Leon van der Heyden | Honda | 2 | Retired | | |
| Ret | Doriano Romboni | Honda | 1 | Retired | 8 | |
| Ret | Harald Eckl | Aprilia | 0 | Retired | | |
| Ret | Ricky Rice | Yamaha | 0 | Retired | | |
| Ret | Peter Linden | Honda | 0 | Retired | | |
| Ret | Corrado Catalano | Honda | 0 | Retired | | |
| Ret | Ian Newton | Yamaha | 0 | Retired | | |

## 125 cc classification

| Pos | Rider | Manufacturer | Laps | Time | Grid | Points |
| 1 | Loris Capirossi | Honda | 24 | 40:15.516 | 1 | 20 |
| 2 | Fausto Gresini | Honda | 24 | +5.764 | 5 | 17 |
| 3 | Noboru Ueda | Honda | 24 | +13.068 | 3 | 15 |
| 4 | Ezio Gianola | Derbi | 24 | +16.617 | 2 | 13 |
| 5 | Ralf Waldmann | Honda | 24 | +22.713 | 8 | 11 |
| 6 | Koji Takada | Honda | 24 | +34.286 | | 10 |
| 7 | Heinz Lüthi | Honda | 24 | +34.725 | 4 | 9 |
| 8 | Alessandro Gramigni | Aprilia | 24 | +34.780 | 10 | 8 |
| 9 | Hans Spaan | Honda | 24 | +42.294 | 13 | 7 |
| 10 | Jorge Martínez | JJ Cobas | 24 | +47.291 | 9 | 6 |
| 11 | Dirk Raudies | Honda | 24 | +47.581 | 15 | 5 |
| 12 | Maurizio Vitali | Gazzaniga | 24 | +47.659 | 11 | 4 |
| 13 | Steve Patrickson | Honda | 24 | +47.939 | | 3 |
| 14 | Peter Galvin | Honda | 24 | +48.364 | 14 | 2 |
| 15 | Hisashi Unemoto | Honda | 24 | +57.904 | | 1 |
| 16 | Kazuto Sakata | Honda | 24 | +58.009 | | |
| 17 | Julián Miralles | JJ Cobas | 24 | +59.981 | | |
| 18 | Herri Torrontegui | JJ Cobas | 24 | +1:01.287 | | |
| 19 | Emilio Cuppini | Gazzaniga | 24 | +1:08.358 | | |
| 20 | Johnny Wickström | Honda | 24 | +1:15.742 | | |
| 21 | Robin Appleyard | Honda | 24 | +1:15.941 | | |
| 22 | Gimmi Bosio | Honda | 24 | +1:18.526 | | |
| 23 | Alfred Waibel | Honda | 24 | +1:26.064 | | |
| 24 | Kinya Wada | Honda | 24 | +1:26.303 | | |
| 25 | Thierry Feuz | Honda | 24 | +1:26.644 | | |
| 26 | Alan Patterson | Honda | 24 | +1:46.388 | | |
| 27 | Hubert Abold | Honda | 23 | +1 lap | | |
| 28 | Linda Walsh | Honda | 23 | +1 lap | | |
| 29 | René Dünki | Honda | 23 | +1 lap | | |
| 30 | Kenneth Fisher | Honda | 23 | +1 lap | | |
| 31 | Tony Daly | Honda | 23 | +1 lap | | |
| 32 | Tony Sims | Honda | 23 | +1 lap | | |
| 33 | Peter Scott | Honda | 22 | +2 laps | | |
| Ret | Gabriele Debbia | Aprilia | 17 | Retired | 6 | |
| Ret | Manuel Herreros | JJ Cobas | 17 | Retired | | |
| Ret | Javier Debon | JJ Cobas | 11 | Retired | | |
| Ret | Bruno Casanova | Honda | 9 | Retired | 12 | |
| Ret | Olivier Petrucciani | Aprilia | 7 | Retired | | |
| Ret | Adolf Stadler | JJ Cobas | 3 | Retired | 7 | |