1991 · Round 1 · FP United States Grand Prix
Phoenix Street Circuit, United States
Sunday, March 10, 1991
Phoenix Street Circuit, United States
Sunday, March 10, 1991
Fastest
SEN
1:23.525
Margin
+0.967
to PRO
Most laps
—
SEN
Laps completed
—
Best lap, gap to the fastest driver and laps completed
| Pos | Driver | Best | Gap | Laps |
|---|---|---|---|---|
| 01 | SENMcLaren · McLaren MP4-6 Honda · Honda | 1:23.525 | — | — |
| 02 | PROFerrari · Ferrari 642 F1 91 ~ Ferrari 643 F1 91 | 1:24.492 | +0.967 | — |
| 03 | MANWilliams · Williams FW14 · Renault | 1:25.050 | +1.525 | — |
| 04 | ALEFerrari · Ferrari 642 F1 91 ~ Ferrari 643 F1 91 | 1:25.278 | +1.753 | — |
| 05 | MORBenetton · Benetton Ford B191 ~ Benetton B190B · Ford | 1:25.414 | +1.889 | — |
| 06 | PIQBenetton · Benetton Ford B191 ~ Benetton B190B · Ford | 1:25.695 | +2.170 | — |
| 07 | MODTyrrell · Tyrrell 020 · Honda | 1:25.736 | +2.211 | — |
| 08 | PATWilliams · Williams FW14 · Renault | 1:25.882 | +2.357 | — |
| 09 | BERMcLaren · McLaren MP4-6 Honda · Honda | 1:25.966 | +2.441 | — |
| 10 | PIRBMS Scuderia Italia · Dallara BMS-F191 Judd · Judd | 1:26.072 | +2.547 | — |
| 11 | JARBMS Scuderia Italia · Dallara BMS-F191 Judd · Judd | 1:26.692 | +3.167 | — |
| 12 | NAKTyrrell · Tyrrell 020 · Honda | 1:26.867 | +3.342 | — |
| 13 | BERLarrousse · Larrousse 91 · Cosworth | 1:27.285 | +3.760 | — |
| 14 | GACJordan · Jordan 191 · Ford | 1:27.387 | +3.862 | — |
| 15 | MARMinardi · Minardi M191 · Ferrari | 1:27.693 | +4.168 | — |
| 16 | BRUBrabham · Brabham BT59Y ~ Brabham BT60Y · Yamaha | 1:28.273 | +4.748 | — |
| 17 | HAKTeam Lotus · Lotus 102B · Judd | 1:28.394 | +4.869 | — |
| 18 | BLUBrabham · Brabham BT59Y ~ Brabham BT60Y · Yamaha | 1:29.041 | +5.516 | — |
| 19 | TARAGS · JH25B JH27 · Cosworth | 1:29.275 | +5.750 | — |
| 20 | JOHAGS · JH25B JH27 · Cosworth | 1:29.382 | +5.857 | — |
| 21 | LARModena · Lambo 291 · Lamborghini | 1:29.384 | +5.859 | — |
| 22 | SUZLarrousse · Larrousse 91 · Cosworth | 1:29.582 | +6.057 | — |
| 23 | ALBFootwork · A11C FA12 · Porsche | 1:29.889 | +6.364 | — |
| 24 | CAFFootwork · A11C FA12 · Porsche | 1:30.097 | +6.572 | — |
| 25 | BOULigier · Ligier JS35B ~ Ligier JS35 · Lamborghini | 1:30.277 | +6.752 | — |
| 26 | GUGLeyton House · Leyton House CG911 · Ilmor | 1:30.646 | +7.121 | — |
| 27 | COMLigier · Ligier JS35B ~ Ligier JS35 · Lamborghini | 1:31.781 | +8.256 | — |
| 28 | MORMinardi · Minardi M191 · Ferrari | 1:34.472 | +10.947 | — |
| 29 | BAITeam Lotus · Lotus 102B · Judd | 1:34.869 | +11.344 | — |
| 30 | CAPLeyton House · Leyton House CG911 · Ilmor | 1:54.228 | +30.703 | — |