Belgian track added following removal of Navarra round.
Stefan Rosina (SLK) set the best time of 1m49.595s in the Reiter Engineering-run Lamborghini LP560-4 to head the field.
The teams and drivers now have a short break before the main race gets underway at 14.15cet this afternoon.
FIA GT Series set for Slovakian Ring challenge. At the halfway mark of the season, the Belgian Audi Club Team WRT has the upper-hand in the title hunt.
Lamborghini beat Audi by just 0.448s!