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For the 2009 season, the FIA are making public the weights of all cars ahead of the race start to help give an idea of relative fuel loads. The cars that made Q3 are weighed after qualifying, while the weights of the remaining cars must be declared by their teams shortly after the session.

Below is the provisional grid for the Japanese Grand Prix with each car's weight. Note - Brawn GP’s Jenson Button and Rubens Barrichello, Force India’s Adrian Sutil, Renault’s Fernando Alonso were all handed five-place grid penalties for failing to slow adequately under yellow flags. Toro Rosso’s Sebastien Buemi received an identical penalty for impeding other cars and causing a potential hazard to other drivers.

Force India's Vitantonio Liuzzi and McLaren's Heikki Kovalainen both have five-place penalties for gearbox changes. Red Bull’s Mark Webber and Toyota’s Timo Glock will start from the pit lane after swapping to new chassis and hence have no fuel restrictions.

Note that the final starting order may change depending on the order in which penalties were deemed to have been applied. A final grid will be published by the FIA on Sunday morning.

1. Sebastian Vettel, Red Bull, 658.5kg
2. Jarno Trulli, Toyota, 655.5
3. Lewis Hamilton, McLaren, 656
4. Nick Heidfeld, BMW Sauber, 660
5. Kimi Raikkonen, Ferrari, 661
6. Nico Rosberg, Williams, 684.5
7. Robert Kubica, BMW Sauber, 686
8. Adrian Sutil, Force India, 650
9. Rubens Barrichello, Brawn GP, 660.5
10. Jaime Alguersuari, Toro Rosso, 682.5
11. Jenson Button, Brawn GP, 658.5
12. Heikki Kovalainen, McLaren, 675
13. Giancarlo Fisichella, Ferrari, 661.5
14. Sebastien Buemi, Toro Rosso, 665.4
15. Kazuki Nakajima, Williams, 695.7
16. Romain Grosjean, Renault, 691.8
17. Fernando Alonso, Renault, 689.5
18. Vitantonio Liuzzi, Force India, 682.5
19. Timo Glock, Toyota, n/a
20. Mark Webber, Red Bull, n/a

http://www.formula1.com/news/headlin.../10/10041.html