The participants in the Friday morning pre-qualifying sessions were slightly reshuffled prior to this event, the season having reached its mid-point. Larrousse had scored enough points during the previous two half-seasons to be relieved of the requirement to pre-qualify, and could automatically join the rest of the field in the main qualifying sessions from here on. A failure to score any points so far this season meant that Ligier were forced to join the pre-qualifying pool. Osella, AGS, EuroBrun, Coloni and Life were all still required to pre-qualify.