Webber suffers as Heidfeld shines
Nick Heidfeld topped the final practice session as Red Bull's title contender Mark Webber had engine problems ahead of Belgian Grand Prix qualifying.
The Australian, third in the drivers' championship behind the Brawns, could manage only three laps and will need a new engine for qualifying at 1300 BST.
Heidfeld's time of one minute 45.388 seconds showed BMW Sauber's improvement courtesy of a new aerodynamic package.
Championship leader Jenson Button was 10th in the timesheets.
After the fastest lap of the hour-long session in cool temperatures at the Spa-Francorchamps circuit had changed hands on numerous occasions, Toyota's Jarno Trulli emerged second ahead of Force India's Adrian Sutil who had Renault's Romain Grosjean behind him.
BBC SPORT | Motorsport | Formula 1 | Webber suffers as Heidfeld shines
The Australian, third in the drivers' championship behind the Brawns, could manage only three laps and will need a new engine for qualifying at 1300 BST.
Heidfeld's time of one minute 45.388 seconds showed BMW Sauber's improvement courtesy of a new aerodynamic package.
Championship leader Jenson Button was 10th in the timesheets.
After the fastest lap of the hour-long session in cool temperatures at the Spa-Francorchamps circuit had changed hands on numerous occasions, Toyota's Jarno Trulli emerged second ahead of Force India's Adrian Sutil who had Renault's Romain Grosjean behind him.
BBC SPORT | Motorsport | Formula 1 | Webber suffers as Heidfeld shines
