1991 Grand Prix of San Marino
28 April - Imola: 307.440km (5.040km x 61 laps)
Pole Position: Ayrton Senna, McLaren-Honda MP4/6, 1:21.877
Results
1. Ayrton Senna McLaren-Honda MP4/6 1:35:14.750 (193.671 km/h)
2. Gerhard Berger McLaren-Honda MP4/6 - 1.675
3. J.J. Lehto Dallara-Judd 191 - 1 lap
4. Pierluigi Martini Minardi-Ferrari M191 - 2 laps
5. Mika Häkkinen Lotus-Judd 102B - 3 laps
6. Julian Bailey Lotus-Judd 102B - 3 laps
7. Thierry Boutsen Ligier-Lamborghini JS35 - 3 laps
8. Mark Blundell Brabham-Yamaha BT60Y - 3 laps
9. Eric van de Poele Lamborghini 291 - 4 laps (Fuel pump)
10. Erik Comas Ligier-Lamborghini JS35 - 4 laps
11. Martin Brundle Brabham-Yamaha BT60Y - 4 laps
12. Mauricio Gugelmin Leyton House-Ilmor CG911 - 6 laps (Engine)
13. Roberto Moreno Benetton-Ford B191 - 7 laps (Gearbox/Engine)
Fastest lap: Gerhard Berger, 1:26.531 (209.682 km/h on lap 55)
Retirements
Stefano Modena Tyrrell-Honda 020 - 20 laps (Transmission)
Andrea de Cesaris Jordan-Ford 191 - 24 laps (Gearbox)
Bertrand Gachot Jordan-Ford 191 - 24 laps (Spun/Suspension)
Ivan Capelli Leyton House-Ilmor CG911 - 37 laps (Puncture/Spun)
Eric Bernard Lola-Ford L91 - 44 laps (Camshaft sensor)
Riccardo Patrese Williams-Renault FW14 - 44 laps (Electrics/Engine)
Satoru Nakajima Tyrrell-Honda 020 - 46 laps (Transmission)
Gianni Morbidelli Minardi-Ferrari M191 - 51 laps (Gearbox)
Aguri Suzuki Lola-Ford L91 - 59 laps (Spun)
Jean Alesi Ferrari 642 - 59 laps (Spun)
Nelson Piquet Benetton-Ford B191 - 60 laps (Spun)
Nigel Mansell Williams-Renault FW14 - 61 laps (Gearbox/Accident)
Did Not Start
Alain Prost Ferrari 642 Spun on warm-up lap
Did Not Qualify
Gabriele Tarquini AGS-Ford JH25
Fabrizio Barbazza AGS-Ford JH25
Alex Caffi Footwork-Porsche FA12
Michele Alboreto Footwork-Porsche A11C
Did Not Pre-qualify
Emanuele Pirro Dallara-Judd 191
Olivier Grouillard Fomet-Ford F1
Nicola Larini Lamborghini 291
Pedro Chaves Coloni-Ford C4
Race leaders:
Riccardo Patrese 1- 9 (9 laps = 45.360 km)
Ayrton Senna 10-61 (52 laps = 262.080 km)
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Starting Grid
1. Ayrton Senna McLaren-Honda MP4/6 1:21.877 (221.601 km/h)
2. Riccardo Patrese Williams-Renault FW14 - 0.080
3. Alain Prost Ferrari 642 - 0.318
4. Nigel Mansell Williams-Renault FW14 - 0.489
5. Gerhard Berger McLaren-Honda MP4/6 - 0.690
6. Stefano Modena Tyrrell-Honda 020 - 1.634
7. Jean Alesi Ferrari 642 - 2.068
8. Gianni Morbidelli Minardi-Ferrari M191 - 2.885
9. Pierluigi Martini Minardi-Ferrari M191 - 2.930
10. Satoru Nakajima Tyrrell-Honda 020 - 3.468
11. Andrea de Cesaris Jordan-Ford 191 - 3.614
12. Bertrand Gachot Jordan-Ford 191 - 3.654
13. Roberto Moreno Benetton-Ford B191 - 3.778
14. Nelson Piquet Benetton-Ford B191 - 3.932
15. Mauricio Gugelmin Leyton House-Ilmor CG911 - 3.964
16. J.J. Lehto Dallara-Judd 191 - 4.097
17. Eric Bernard Lola-Ford L91 - 4.106
18. Martin Brundle Brabham-Yamaha BT60Y - 4.178
19. Erik Comas Ligier-Lamborghini JS35 - 4.330
20. Aguri Suzuki Lola-Ford L91 - 4.479
21. Eric van de Poele Lamborghini 291 - 4.673
22. Ivan Capelli Leyton House-Ilmor CG911 - 4.725
23. Mark Blundell Brabham-Yamaha BT60Y - 4.901
24. Thierry Boutsen Ligier-Lamborghini JS35 - 5.121
25. Mika Häkkinen Lotus-Judd 102B - 5.447
26. Julian Bailey Lotus-Judd 102B - 6.099
Did Not Qualify
27. Gabriele Tarquini AGS-Ford JH25 - 6.298
28. Fabrizio Barbazza AGS-Ford JH25 - 7.788
29. Alex Caffi Footwork-Porsche FA12 - 8.403
30. Michele Alboreto Footwork-Porsche A11C - 8.885
Did Not Pre-qualify
31. Emanuele Pirro Dallara-Judd 191 - 4.428
32. Olivier Grouillard Fomet-Ford F1 - 4.912
33. Nicola Larini Lamborghini 291 - 5.009
34. Pedro Chaves Coloni-Ford C4 - 9.362