PORTUGUESE GRAND PRIX - PRACTICE 2
22 Sep 1991
Autódromo do Estoril, Portugal
| Pos. | No. | Driver | Team | Time / Gap | 
|---|---|---|---|---|
| 1 | 6 | Riccardo PatresePAT | Williams Renault | 1:13.615 | 
| 2 | 1 | Ayrton SennaSEN | McLaren Honda | +0.886s | 
| 3 | 2 | Gerhard BergerBER | McLaren Honda | +0.931s | 
| 4 | 5 | Nigel MansellMAN | Williams Renault | +1.023s | 
| 5 | 4 | Stefano ModenaMOD | Tyrrell Honda | +1.793s | 
| 6 | 20 | Nelson PiquetPIQ | Benetton Ford | +2.046s | 
| 7 | 23 | Pierluigi MartiniMAR | Minardi Ferrari | +2.242s | 
| 8 | 22 | Jyrki JarvilehtoJAR | Dallara Judd | +2.257s | 
| 9 | 19 | Michael SchumacherMSC | Benetton Ford | +2.266s | 
| 10 | 21 | Emanuele PirroPIR | Dallara Judd | +2.510s | 
| 11 | 16 | Ivan CapelliCAP | Leyton House Ilmor | +2.693s | 
| 12 | 32 | Roberto MorenoMOR | Jordan Ford | +2.802s | 
| 13 | 8 | Mark BlundellBLU | Brabham Yamaha | +2.894s | 
| 14 | 15 | Mauricio GugelminGUG | Leyton House Ilmor | +3.182s | 
| 15 | 9 | Michele AlboretoALB | Footwork Porsche | +3.246s | 
| 16 | 7 | Martin BrundleBRU | Brabham Yamaha | +3.261s | 
| 17 | 12 | Johnny HerbertHER | Lotus Judd | +3.467s | 
| 18 | 26 | Erik ComasCOM | Ligier Lamborghini | +3.661s | 
| 19 | 3 | Satoru NakajimaNAK | Tyrrell Honda | +3.777s | 
| 20 | 24 | Gianni MorbidelliMOR | Minardi Ferrari | +3.919s | 
| 21 | 25 | Thierry BoutsenBOU | Ligier Lamborghini | +3.934s | 
| 22 | 30 | Aguri SuzukiSUZ | Lola Ford | +4.008s | 
| 23 | 33 | Andrea de CesarisDEC | Jordan Ford | +4.112s | 
| 24 | 11 | Mika HakkinenHAK | Lotus Judd | +4.447s | 
| 25 | 27 | Alain ProstPRO | Ferrari | +4.477s | 
| 26 | 35 | Eric van de PoeleVAN | Lambo Lamborghini | +4.549s | 
| 27 | 34 | Nicola LariniLAR | Lambo Lamborghini | +4.556s | 
| 28 | 17 | Gabriele TarquiniTAR | AGS Ford | +4.836s | 
| 29 | 29 | Eric BernardBER | Lola Ford | +5.388s | 
| 30 | 28 | Jean AlesiALE | Ferrari | +5.558s |