Lewis Hamilton had a difficult first day at Spa, finishing FP2 only 12th and some 1.420 seconds off pace-setter Sebastian Vettel after struggling to find one-lap speed.
Hamilton, who came to Belgium on the back of his Hungarian GP win, said he lacked grip with the low downforce specification used at Spa.
“We have some work ahead of us this evening to get the car feeling just right, but overall today was a reasonable start to the weekend,” he said. “The car feels very different here with the low downforce setup, compared to at the last race, and we need to refine a few areas to get the balance sorted.
“We were able to get some good long-run work done today, and that’s the most important thing for the race. We’ve got time to make the changes required, so I’m optimistic that tomorrow will see an improvement.”