1991 Don't Drink Drive Sandown 500
The 1991 Don't Drink Drive Sandown 500 was an endurance race for Group 3A Touring Cars. The event was held on 8 September 1991 at the Sandown circuit in Victoria, Australia over 161 laps of the 3.10 km "long" circuit, totalling 499 km. The race was the first round of both the 1991 Australian Endurance Championship and the 1991 Australian Manufacturers' Championship.
The race was won by first time winners Mark Gibbs and Rohan Onslow and the Bob Forbes Racing team in just their second race since taking delivery of the team's new Gibson Motorsport developed Nissan Skyline GT-R. With six classified it was the smallest number of classified finishers in the history of the Sandown 500 touring car race.
Results
Top 10 Qualifiers
Although no official Top 10 run off was held during qualifying for the Sandown 500, the top 10 qualifiers were:| Pos | No | Team | Driver | Car | Qual |
| 1 | 30 | Peter Jackson Racing |  Glenn Seton | Ford Sierra RS500 | 1:14.17 |
| 2 | 4 | GIO Racing | Mark Gibbs | Nissan Skyline R32 GT-R | 1:14.66 |
| 3 | 05 | Mobil 1 Racing | Peter Brock | Holden VN Commodore SS Group A SV | 1:14.67 |
| 4 | 11 | Mobil 1 Racing | Larry Perkins | Holden VN Commodore SS Group A SV | 1:14.73 |
| 5 | 16 | Holden Racing Team |  Win Percy | Holden VN Commodore SS Group A SV | 1:15.38 |
| 6 | 28 | Playscape Racing | Kevin Waldock | Ford Sierra RS500 | 1:16.39 |
| 7 | 16 | Holden Racing Team | Neil Crompton | Holden VN Commodore SS Group A SV | 1:16.43 |
| 8 | 25 | Benson & Hedges Racing | Alan Jones | BMW M3 Evolution | 1:17.27 |
| 9 | 26 | Gemspares | Daryl Hendrick | Holden VL Commodore SS Group A SV | NA |
| 10 | 13 | Car Trek Racing Pty. Ltd. | Bob Jones | Holden VL Commodore SS Group A SV | NA |
Race
Statistics
- Pole Position - 1:14.17 - #30 Glenn Seton - Ford Sierra RS500
- Fastest Lap - 1:15.74 - #4 Mark Gibbs - Nissan Skyline R32 GT-R