Lewis Hamilton headed the times at the end of first practice in Singapore.
However the session was suspended twice due to problems with the kerbs at Singapore.
The start of the session was delayed by half an hour as kerbs were repaired at the exit of several corners. Practice finally began and was run for one hour instead of the scheduled 90 minutes.
The lap times were initially very slow on the dusty track as the session began. Felipe Massa led the running early on ahead of Mark Webber.
But Webber hit trouble when he caught Timo Glock’s Virgin. He moved to pass at the final corner but Glock stuck to his line.
The result was a smashed front wing for Webber and a left-rear puncture – and early end to the session – for Glock.
Moments later Heikki Kovalainen had a spot of deja vu as part of his Lotus caught fire – as it had at the end of last year’s race.
This time it was his front-left brake which caught alight. The session was stopped as his car was recovered.
After the restart Vettel and Hamilton traded fastest times but the red flag was out again with less than ten minutes remaining.
Again the cause was a loose kerb with a bolt sticking out of it. Massa had hit the kerb earlier and run wide.
Both Ferraris and Red Bulls came out for a final run after the restart, but of the McLarens only Jenson Button returned to the track as Hamilton’s tyres weren’t ready. However his earlier time remained the fastest of the session.
Vettel and Webber were second and third ahead of Fernando Alonso and Button.
2011 Singapore Grand Prix
Image © McLaren