Button bullish on Belgium chances

After winning three of the last five grands prix, McLaren are looking to increase the pressure on Red Bull at Belgium's Spa circuit this weekend.

"Our aim will be to put pressure on the championship front-runners," said Jenson Button. "It felt great to go into the summer break off the back of the win in Hungary."

Red Bull's Sebastian Vettel still holds a sizeable championship lead but with eight races remaining McLaren's Lewis Hamilton is far from despondent. "We go into the race weekend in a pretty good place. We've won the last two grands prix and the car feels strong," he said.

Bruno Senna will replace Nick Heidfeld for Renault at Spa. Heidfeld has qualified in the top 10 only four times so far.