Button will pit two laps before Vettel (Spanish GP fuel weights and pit stops)

Posted on | Author Keith Collantine

If Vettel can keep up with Button he's in a strong position to win
If Vettel can keep up with Button he's in a strong position to win

Jenson Button may be on pole position but he’ll have to pull away quickly at the start as four cars behind him on the grid are all carrying more fuel.

Sebastian Vettel looks set to stop two laps later and Felipe Massa has around four more laps of fuel on board.

Grid Qualifying Name Weight Fuel (kg) First stint (laps)
1 1 Jenson Button 646 41 17
2 2 Sebastian Vettel 651.5 46.5 19
3 3 Rubens Barrichello 649.5 44.5 18
4 4 Felipe Massa 655 50 21
5 5 Mark Webber 651.5 46.5 19
6 6 Timo Glock 646.5 41.5 17
7 7 Jarno Trulli 655.5 50.5 21
8 8 Fernando Alonso 645 40 16
9 9 Nico Rosberg 668 63 26
10 10 Robert Kubica 660 55 23
11 11 Kazuki Nakajima 676.6 71.6 30
12 12 Nelson Piquet Jnr 677.4 72.4 30
13 13 Nick Heidfeld 676.3 71.3 30
14 14 Lewis Hamilton 683 78 33
15 15 Sebastien Buemi 678 73 31
16 16 Kimi Raikkonen 673 68 28
17 17 Sebastien Bourdais 669 64 27
18 18 Heikki Kovalainen 657 52 21
19 19 Adrian Sutil 675 70 29
20 20 Giancarlo Fisichella 656 51 21

How the pit stop predictions were calculated: 1. Deduct minimum weight of 605kg. 2. Divide fuel load by average of 2.271kg per lap (source: Williams) 3. Deduct one lap of fuel to cover the drivers driving to the grid and doing their formation lap.

Other factors may alter the lap a driver pits such as changes in weather conditions, safety car deployment, variation in fuel use between different engines and cars, changes in setup, drivers’ ability to save fuel and reduced fuel use as the load decreases and a car becomes lighter.

Other points to note include:

  • Both Red Bulls are carrying the same fuel load
  • Heikki Kovalainen has fuelled lightly in a bid to make up places
  • Kimi Raikkonen has chosen the opposite tactic in a bid to make up places and is carrying a lot of fuel instead

Read more: Last-second lap puts Button on pole (Spanish Grand Prix qualifying)

Spanish Grand Prix pit stop strategies (click to enlarge)
Spanish Grand Prix pit stop strategies (click to enlarge)