United States Grand Prix
San Marino Grand Prix
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| Pos | Driver | Constructor | Q1 | Q2 | Gap |
|---|---|---|---|---|---|
| 1 | Ayrton Senna | McLaren-Honda | 1:18.711 | 1:16.392 | |
| 2 | Riccardo Patrese | Williams-Renault | 1:22.069 | 1:16.775 | 0.383 |
| 3 | Nigel Mansell | Williams-Renault | 1:20.056 | 1:16.843 | 0.451 |
| 4 | Gerhard Berger | McLaren-Honda | 1:19.557 | 1:17.471 | 1.079 |
| 5 | Jean Alesi | Ferrari | 1:19.350 | 1:17.601 | 1.209 |
| 6 | Alain Prost | Ferrari | 1:20.079 | 1:17.739 | 1.347 |
| 7 | Nelson Piquet | Benetton-Ford | 1:20.105 | 1:18.577 | 2.185 |
| 8 | Mauricio Gugelmin | Leyton House-Ilmor | 1:22.196 | 1:18.664 | 2.272 |
| 9 | Stefano Modena | Tyrrell-Honda | 1:21.709 | 1:18.847 | 2.455 |
| 10 | Bertrand Gachot | Jordan-Ford | 1:21.493 | 1:18.882 | 2.490 |
| 11 | Éric Bernard | Lola-Ford | 1:22.127 | 1:19.291 | 2.899 |
| 12 | Emanuele Pirro | Dallara-Judd | 1:21.286 | 1:19.305 | 2.913 |
| 13 | Andrea de Cesaris | Jordan-Ford | 1:21.710 | 1:19.339 | 2.947 |
| 14 | Roberto Moreno | Benetton-Ford | 1:21.266 | 1:19.360 | 2.968 |
| 15 | Ivan Capelli | Leyton House-Ilmor | 1:21.171 | 1:19.517 | 3.125 |
| 16 | Satoru Nakajima | Tyrrell-Honda | 1:21.825 | 1:19.546 | 3.154 |
| 17 | Aguri Suzuki | Lola-Ford | 1:22.281 | 1:19.832 | 3.440 |
| 18 | Thierry Boutsen | Ligier-Lamborghini | 1:23.197 | 1:19.868 | 3.476 |
| 19 | JJ Lehto | Dallara-Judd | 1:22.243 | 1:19.954 | 3.562 |
| 20 | Pierluigi Martini | Minardi-Ferrari | 1:22.852 | 1:20.175 | 3.783 |
| 21 | Gianni Morbidelli | Minardi-Ferrari | 1:26.147 | 1:20.502 | 4.110 |
| 22 | Mika Häkkinen | Lotus-Judd | 1:25.587 | 1:20.611 | 4.219 |
| 23 | Érik Comas | Ligier-Lamborghini | 1:22.682 | 1:21.168 | 4.776 |
| 24 | Gabriele Tarquini | AGS-Ford | 1:23.618 | 1:21.219 | 4.827 |
| 25 | Mark Blundell | Brabham-Yamaha | 1:23.547 | 1:21.230 | 4.838 |
| 26 | Martin Brundle | Brabham-Yamaha | 1:23.271 | 1:21.280 | 4.888 |
| 27 | Alex Caffi | Footwork-Porsche | 1:25.555 | 1:22.190 | 5.798 |
| 28 | Stefan Johansson | AGS-Ford | 1:24.698 | 1:22.432 | 6.040 |
| 29 | Michele Alboreto | Footwork-Porsche | 1:25.795 | 1:22.739 | 6.347 |
| 30 | Julian Bailey | Lotus-Judd | 1:24.947 | 1:23.590 | 7.198 |
| 1 | Ayrton Senna | 20 | 10,10 | |
| 2 | Alain Prost | 9 | 6,3 | |
| ▲ | 3 | Riccardo Patrese | 6 | 0,6 |
| Nelson Piquet | 6 | 4,2 | ||
| ▲ | 5 | Gerhard Berger | 4 | 0,4 |
| ▼ | 6 | Stefano Modena | 3 | 3,0 |
| ▼ | 7 | Satoru Nakajima | 2 | 2,0 |
| ▼ | 8 | Jean Alesi | 1 | 0,1 |
| ▼ | Aguri Suzuki | 1 | 1,0 |
| 1 | McLaren-Honda | 24 | 10,14 | |
| 2 | Ferrari | 10 | 6,4 | |
| ▲ | 3 | Williams-Renault | 6 | 0,6 |
| ▲ | Benetton-Ford | 6 | 4,2 | |
| ▼ | 5 | Tyrrell-Honda | 5 | 5,0 |
| ▼ | 6 | Lola-Ford | 1 | 1,0 |