SAN MARINO GRAND PRIX - PRACTICE 1
13 May 1990
Autodromo Internazionale Enzo e Dino Ferrari, San Marino
| Pos. | No. | Driver | Team | Time / Gap |
|---|---|---|---|---|
| 1 | 27 | Ayrton SennaSEN | McLaren Honda | 1:24.496 |
| 2 | 2 | Nigel MansellMAN | Ferrari | +0.611s |
| 3 | 6 | Riccardo PatresePAT | Williams Renault | +0.848s |
| 4 | 28 | Gerhard BergerBER | McLaren Honda | +0.851s |
| 5 | 1 | Alain ProstPRO | Ferrari | +1.466s |
| 6 | 5 | Thierry BoutsenBOU | Williams Renault | +1.472s |
| 7 | 19 | Alessandro NanniniNAN | Benetton Ford | +1.613s |
| 8 | 22 | Andrea de CesarisDEC | Dallara Ford | +2.378s |
| 9 | 23 | Pierluigi MartiniMAR | Minardi Ford | +2.468s |
| 10 | 20 | Nelson PiquetPIQ | Benetton Ford | +2.548s |
| 11 | 12 | Martin DonnellyDON | Lotus Lamborghini | +2.701s |
| 12 | 25 | Nicola LariniLAR | Ligier Ford | +3.159s |
| 13 | 4 | Jean AlesiALE | Tyrrell Ford | +3.305s |
| 14 | 26 | Philippe AlliotALL | Ligier Ford | +3.350s |
| 15 | 11 | Derek WarwickWAR | Lotus Lamborghini | +3.542s |
| 16 | 30 | Aguri SuzukiSUZ | Lola Lamborghini | +3.672s |
| 17 | 29 | Eric BernardBER | Lola Lamborghini | +4.059s |
| 18 | 21 | Emanuele PirroPIR | Dallara Ford | +4.173s |
| 19 | 3 | Satoru NakajimaNAK | Tyrrell Ford | +4.242s |
| 20 | 35 | Gregor FoitekFOI | Onyx Ford | +4.371s |
| 21 | 36 | Jyrki JarvilehtoJAR | Onyx Ford | +4.431s |
| 22 | 15 | Mauricio GugelminGUG | Leyton House Judd | +4.614s |
| 23 | 10 | Alex CaffiCAF | Arrows Ford | +4.663s |
| 24 | 33 | Roberto MorenoMOR | Euro Brun Judd | +4.826s |
| 25 | 24 | Paolo BarillaBAR | Minardi Ford | +5.101s |
| 26 | 8 | Stefano ModenaMOD | Brabham Judd | +5.272s |
| 27 | 14 | Olivier GrouillardGRO | Osella Ford | +5.294s |
| 28 | 9 | Michele AlboretoALB | Arrows Ford | +5.434s |
| 29 | 16 | Ivan CapelliCAP | Leyton House Judd | +5.822s |
| 30 | 7 | David BrabhamBRA | Brabham Judd | +6.578s |