Singapore 2009: Post-Qualifying Car Weights

Singapore 2009: Post-Qualifying Car Weights

The FIA have published the measured and declared car weights from the Singapore Grand Prix qualifying session and from the data they have provided, we can make a fairly good guess as to which lap the drivers will make their first pitstop, and how many they are likely to make during the race. Of course, this all relies on no safety car and usual weather. While the weather looks good for the race tomorrow, the safety is expected due to the nature of the circuit.

Williams reckon it takes around 2.5kg of fuel to cover a normalised distance of 5km in Singapore trim, and therefore each 5.067km lap of the Marina Bay circuit will consume around 2.5335kg of gas. Taking off the minimum weight of the cars from the declared weights (we assume every team achieves minimum weight and adds ballast) and also take away a couple of laps for grid forming and margin, and what’s left can be divided by 2.5335 to work out haw many laps of fuel each driver has.

From the table below we can see that most of the top-ten have elected to run a two stop strategy although Sebastian Vettel and Nick Heidfeld look to going for a three-stopper. Vettel, who qualified in P2, will undoubtedly be hoping he can get ahead of the KERS-enabled Lewis Hamilton before the first sequence of corners tomorrow.

Moving further down the grid we can see that the bottom-ten have elected to run a one-stopper with the sole exception of Vitantonio Liuzzi, who qualified right at the very back of the grid. Force India often split their strategies, as do Toyota who sometimes put an awful lot of fuel in one of their cars. This time it is Jarno Trulli’s turn to lug around a heavy fuel tank for the first part of tomorrow’s race.

The heaviest drivers on the grid are Adrian Sutil and Jarno Trulli, while the lightest are Sebastian Vettel and Nick Heidfeld.

Singapore 2009
Post-Qualifying Car Weights

Car Weight

Fuel Weight

First Stop
Estimated Lap

1. British FlagLewis Hamilton McLaren 660.5 50.4 20
2. German FlagSebastian Vettel Red Bull Racing 651 40.9 16
3. German FlagNico Rosberg Williams 657.5 47.4 19
4. Australian FlagMark Webber Red Bull Racing 654.5 44.4 18
5. Brazilian FlagRubens Barrichello Brawn 655.5 45.4 18
6. Spanish FlagFernando Alonso Renault 658 51 20
7. German FlagTimo Glock Toyota 660.5 50.4 20
8. German FlagNick Heidfeld BMW 650 39.9 16
9. Polish FlagRobert Kubica BMW 664 53.9 21
10. Finnish FlagHeikki Kovalainen McLaren 664.5 54.4 21
11. Japanese FlagKazuki Nakajima Williams 680.7 70.6 28
12. British FlagJenson Button Brawn 683 72.9 29
13. Finnish FlagKimi Raikkonen Ferrari 680.5 70.4 28
14. Swiss FlagSebastien Buemi Scuderia Toro Rosso 678 67.9 27
15. Italian FlagJarno Trulli Toyota 690.9 80.8 32
16. German FlagAdrian Sutil Force India 693 82.9 33
17. Spanish FlagJaime Alguersuari Scuderia Toro Rosso 683.5 73.4 29
18. Italian FlagGiancarlo Fisichella Ferrari 678.5 68.4 27
19. French FlagRomain Grosjean Renault 683 72.9 29
20. Italian FlagVitantonio Liuzzi Force India 656 45.9 18

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