ENICHEM GRAND PRIX OF USA - PRACTICE 1
19 Jun 1988
Detroit Street Circuit, United States
| Pos. | No. | Driver | Team | Time / Gap |
|---|---|---|---|---|
| 1 | 11 | Alain ProstPRO | McLaren Honda | 1:41.410 |
| 2 | 12 | Ayrton SennaSEN | McLaren Honda | +0.797s |
| 3 | 20 | Thierry BoutsenBOU | Benetton Ford | +2.419s |
| 4 | 5 | Nigel MansellMAN | Williams Judd | +2.493s |
| 5 | 28 | Gerhard BergerBER | Ferrari | +3.168s |
| 6 | 27 | Michele AlboretoALB | Ferrari | +3.373s |
| 7 | 6 | Riccardo PatresePAT | Williams Judd | +4.063s |
| 8 | 14 | Philippe StreiffSTR | AGS Ford | +4.333s |
| 9 | 30 | Philippe AlliotALL | Lola Ford | +4.587s |
| 10 | 23 | Pierluigi MartiniMAR | Minardi Ford | +4.592s |
| 11 | 19 | Alessandro NanniniNAN | Benetton Ford | +4.641s |
| 12 | 36 | Alex CaffiCAF | Dallara Ford | +4.870s |
| 13 | 33 | Stefano ModenaMOD | Euro Brun Ford | +5.112s |
| 14 | 25 | Rene ArnouxARN | Ligier Judd | +5.200s |
| 15 | 32 | Oscar LarrauriLAR | Euro Brun Ford | +5.240s |
| 16 | 22 | Andrea de CesarisDEC | Rial Ford | +5.299s |
| 17 | 26 | Stefan JohanssonJOH | Ligier Judd | +5.330s |
| 18 | 18 | Eddie CheeverCHE | Arrows Megatron | +5.414s |
| 19 | 29 | Yannick DalmasDAL | Lola Ford | +5.480s |
| 20 | 1 | Nelson PiquetPIQ | Lotus Honda | +5.530s |
| 21 | 15 | Mauricio GugelminGUG | March Judd | +5.607s |
| 22 | 24 | Luis Perez-SalaPER | Minardi Ford | +5.711s |
| 23 | 31 | Gabriele TarquiniTAR | Coloni Ford | +5.902s |
| 24 | 2 | Satoru NakajimaNAK | Lotus Honda | +6.076s |
| 25 | 21 | Nicola LariniLAR | Osella | +6.292s |
| 26 | 4 | Julian BaileyBAI | Tyrrell Ford | +6.818s |
| 27 | 3 | Jonathan PalmerPAL | Tyrrell Ford | +6.866s |
| 28 | 16 | Ivan CapelliCAP | March Judd | +7.628s |
| 29 | 17 | Derek WarwickWAR | Arrows Megatron | +8.573s |
| 30 | 10 | Bernd SchneiderSCH | Zakspeed | +14.006s |
| 31 | 9 | Piercarlo GhinzaniGHI | Zakspeed | +537.913s |