1991 Pole positions

   G. Prix      Driver          Car             Time       km/h
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1  USA          Ayrton Senna    McLaren MP4-6   1'21.434   164.452

2  Brazil       Ayrton Senna    McLaren MP4-6   1'16.392   203.817

3  San Marino   Ayrton Senna    McLaren MP4-6   1'21.877   221.600

4  Monaco       Ayrton Senna    McLaren MP4-6   1'20.344   149.118

5  Canada       Riccardo PatreseWilliams FW14   1'19.837   199.757

6  Mexico       Riccardo PatreseWilliams FW14   1'16.696   207.515

7  France       Riccardo PatreseWilliams FW14   1'14.559   206.220

8  Great BritainNigel Mansell   Williams FW14   1'20.939   232.441

9  Germany      Nigel Mansell   Williams FW14   1'37.087   252.219

10 Hungary      Ayrton Senna    McLaren MP4-6   1'16.147   187.595

11 Belgium      Ayrton Senna    McLaren MP4-6   1'47.811   231.738

12 Italy        Ayrton Senna    McLaren MP4-6   1'21.114   257.415

13 Portugal     Riccardo PatreseWilliams FW14   1'13.001   214.517

14 Spain        Gerhard Berger  McLaren MP4-6   1'18.751   217.002

15 Japan        Gerhard Berger  McLaren MP4-6   1'34.700   222.918

16 Australia    Ayrton Senna    McLaren MP4-6   1'14.041   183.790