ICEBERG USA GRAND PRIX - PRACTICE 2
10 Mar 1991
Phoenix Street Circuit, United States
| Pos. | No. | Driver | Team | Time / Gap | 
|---|---|---|---|---|
| 1 | 6 | Riccardo PatresePAT | Williams Renault | 1:24.066 | 
| 2 | 2 | Gerhard BergerBER | McLaren Honda | +0.092s | 
| 3 | 1 | Ayrton SennaSEN | McLaren Honda | +0.148s | 
| 4 | 27 | Alain ProstPRO | Ferrari | +0.215s | 
| 5 | 4 | Stefano ModenaMOD | Tyrrell Honda | +0.851s | 
| 6 | 32 | Bertrand GachotGAC | Jordan Ford | +0.908s | 
| 7 | 5 | Nigel MansellMAN | Williams Renault | +1.114s | 
| 8 | 19 | Roberto MorenoMOR | Benetton Ford | +1.283s | 
| 9 | 28 | Jean AlesiALE | Ferrari | +1.431s | 
| 10 | 7 | Martin BrundleBRU | Brabham Yamaha | +1.493s | 
| 11 | 16 | Ivan CapelliCAP | Leyton House Ilmor | +1.648s | 
| 12 | 29 | Eric BernardBER | Lola Ford | +1.684s | 
| 13 | 20 | Nelson PiquetPIQ | Benetton Ford | +1.730s | 
| 14 | 22 | Jyrki JarvilehtoJAR | Dallara Judd | +1.793s | 
| 15 | 34 | Nicola LariniLAR | Lambo Lamborghini | +1.995s | 
| 16 | 3 | Satoru NakajimaNAK | Tyrrell Honda | +2.447s | 
| 17 | 17 | Gabriele TarquiniTAR | AGS Ford | +3.184s | 
| 18 | 11 | Mika HakkinenHAK | Lotus Judd | +3.254s | 
| 19 | 8 | Mark BlundellBLU | Brabham Yamaha | +3.487s | 
| 20 | 21 | Emanuele PirroPIR | Dallara Judd | +3.549s | 
| 21 | 10 | Alex CaffiCAF | Footwork Porsche | +3.567s | 
| 22 | 26 | Erik ComasCOM | Ligier Lamborghini | +3.593s | 
| 23 | 24 | Gianni MorbidelliMOR | Minardi Ferrari | +3.884s | 
| 24 | 15 | Mauricio GugelminGUG | Leyton House Ilmor | +3.903s | 
| 25 | 23 | Pierluigi MartiniMAR | Minardi Ferrari | +3.923s | 
| 26 | 9 | Michele AlboretoALB | Footwork Porsche | +4.550s | 
| 27 | 25 | Thierry BoutsenBOU | Ligier Lamborghini | +4.931s | 
| 28 | 18 | Stefan JohanssonJOH | AGS Ford | +5.872s | 
| 29 | 12 | Julian BaileyBAI | Lotus Judd | +6.238s | 
| 30 | 30 | Aguri SuzukiSUZ | Lola Ford | +8.236s |