MONACO GRAND PRIX - PRACTICE 1
12 May 1991
Circuit de Monaco, Monaco
| Pos. | No. | Driver | Team | Time / Gap |
|---|---|---|---|---|
| 1 | 2 | Gerhard BergerBER | McLaren Honda | 1:22.259 |
| 2 | 1 | Ayrton SennaSEN | McLaren Honda | +0.412s |
| 3 | 19 | Roberto MorenoMOR | Benetton Ford | +0.698s |
| 4 | 28 | Jean AlesiALE | Ferrari | +1.280s |
| 5 | 6 | Riccardo PatresePAT | Williams Renault | +1.336s |
| 6 | 5 | Nigel MansellMAN | Williams Renault | +1.603s |
| 7 | 20 | Nelson PiquetPIQ | Benetton Ford | +1.610s |
| 8 | 4 | Stefano ModenaMOD | Tyrrell Honda | +2.067s |
| 9 | 27 | Alain ProstPRO | Ferrari | +2.526s |
| 10 | 23 | Pierluigi MartiniMAR | Minardi Ferrari | +2.598s |
| 11 | 17 | Gabriele TarquiniTAR | AGS Ford | +2.857s |
| 12 | 32 | Bertrand GachotGAC | Jordan Ford | +2.937s |
| 13 | 3 | Satoru NakajimaNAK | Tyrrell Honda | +3.272s |
| 14 | 7 | Martin BrundleBRU | Brabham Yamaha | +3.438s |
| 15 | 21 | Emanuele PirroPIR | Dallara Judd | +3.604s |
| 16 | 33 | Andrea de CesarisDEC | Jordan Ford | +3.749s |
| 17 | 16 | Ivan CapelliCAP | Leyton House Ilmor | +3.830s |
| 18 | 22 | Jyrki JarvilehtoJAR | Dallara Judd | +3.847s |
| 19 | 15 | Mauricio GugelminGUG | Leyton House Ilmor | +4.352s |
| 20 | 25 | Thierry BoutsenBOU | Ligier Lamborghini | +4.481s |
| 21 | 26 | Erik ComasCOM | Ligier Lamborghini | +4.582s |
| 22 | 18 | Fabrizio BarbazzaBAR | AGS Ford | +5.146s |
| 23 | 10 | Alex CaffiCAF | Footwork Porsche | +5.417s |
| 24 | 30 | Aguri SuzukiSUZ | Lola Ford | +5.589s |
| 25 | 24 | Gianni MorbidelliMOR | Minardi Ferrari | +5.742s |
| 26 | 11 | Mika HakkinenHAK | Lotus Judd | +6.165s |
| 27 | 29 | Eric BernardBER | Lola Ford | +6.210s |
| 28 | 9 | Michele AlboretoALB | Footwork Porsche | +6.396s |
| 29 | 12 | Julian BaileyBAI | Lotus Judd | +6.503s |
| 30 | 8 | Mark BlundellBLU | Brabham Yamaha | +7.951s |