Kubica unsure what to expect at Spa

Robert Kubica says it is impossible to predict if BMW Sauber will be able to repeat its promising performance of the European Grand Prix at Spa this weekend

Kubica enjoyed one his strongest races of the season at Valencia, where the Pole finished in eighth but claimed he could have done better had he managed a better qualifying.

But given the very different track characteristic of Spa, Kubica says he doesn't know what to expect.

"I think we had a few factors that were playing positively for us in Valencia, like small updates on the car and also track characteristics," Kubica told reporters at Spa.

"Also the temperatures. We have to see here how the car will perform. Of course it would be very good to at least repeat the performance from Valencia here at Spa, but it might be a completely different story so I really don't know what to expect."

The BMW driver admitted a point this season felt like a podium in 2008, the Pole having scored just three in 11 races so far this year.

"It's always positive to have good races, especially after such a difficult season," he said. "But I think these days a point is like a podium last year so I think we did a good race.

"Unfortunately qualifying maybe a few more points, two, maybe three, because the race pace was quite good. But in qualifying we didn't manage to do a proper lap."