Sebastian Vettel carrying more fuel than Toyotas (Bahrain GP fuel and pit stops)

Posted on | Author Keith Collantine

Sebastian Vettel is fuelled three laps longer than pole sitter Jarno Trulli
Sebastian Vettel is fuelled three laps longer than pole sitter Jarno Trulli

Jarno Trulli may have taken pole position but Sebastian Vettel is set to stop three laps later than the Toyota driver in the Bahrain Grand Prix.

Here’s the fuel weights for each of the drivers and their predicted first stint lengths.

Grid Qualifying Name Weight Fuel (kg) First stint (laps)
1 1 Jarno Trulli 648.5 43.5 12
2 2 Timo Glock 643 38 10
3 3 Sebastian Vettel 659 54 15
4 4 Jenson Button 652.5 47.5 13
5 5 Lewis Hamilton 652.5 47.5 13
6 6 Rubens Barrichello 649 44 12
7 7 Fernando Alonso 650.5 45.5 12
8 8 Felipe Massa 664.5 59.5 17
9 9 Nico Rosberg 670.5 65.5 19
10 10 Kimi Raikkonen 671.5 66.5 20
11 11 Heikki Kovalainen 678.5 73.5 22
12 12 Kazuki Nakajima 680.9 75.9 23
13 13 Robert Kubica 698.6 93.6 29
14 14 Nick Heidfeld 696.3 91.3 28
15 15 Nelson Piquet Jnr 677.6 72.6 22
16 17 Sebastien Buemi 678.5 73.5 22
17 18 Giancarlo Fisichella 652 47 13
18 19 Mark Webber 656 51 14
19 16 Adrian Sutil* 679 74 22
20 20 Sebastien Bourdais 667.5 62.5 18

*Three-place penalty

A few other things to note:

  • Jarno Trulli and Jenson Button both out-qualified their team mates despite carrying more fuel
  • Mark Webber is starting light in a bid to make up places
  • Both the BMWs are fuelled very heavily

How the pit stop predictions were calculated: 1. Deduct minimum weight of 605kg. 2. Divide fuel load by average of 2.879kg per lap (source: Williams) 3. Deduct three laps for grid lap, formation lap and extra left in tank before first stop.

Read more: Jarno Trulli leads first Toyota front row lockout (Bahrain Grand Prix qualifying)

Bahrain Grand prix pit stop predictions (click to enlarge)
Bahrain Grand prix pit stop predictions (click to enlarge)

71 comments on “Sebastian Vettel carrying more fuel than Toyotas (Bahrain GP fuel and pit stops)”

  1. wow. This Vettel character is pretty quick, huh?

    1. Can I ask what Webber did in another life to warrant so much damn bad luck?

  2. Trulli really is a 1 lap magician, He’s even got more fuel than Glock!

  3. Everybody reasonably filled.

    From 643kg (Timo), to 671,5kg (Kimi) – only from the first 10.

    I was expecting a bigger difference from the Toyotas, Vettel and Alonso… And the Brawn are not that heavy, so they really loose some competitiveness…

    Also Hamilton is heavier than Alonso and Barrichello

    It’s going to be a pretty busy time at those pits when the pit windows open!….

    1. Yeah Hamilton’s time was a bit of a surprise – the MP4/24 is obviously getting better but he must have done a pretty decent lap as well.

    2. Hamilton has been quickest in S1 all weekend. He falls off in S2.

      Hamilton definitely got a great lap in. The McLaren is surely improving, but I don’t think it’s more than 3 tenths faster than the Renault on equal fuel.

      On another note, Ferrari clearly favors Massa over Raikkonen. They fueled him three laps less than Iceman. It’s absolutely horrendous the way they are treating Raikkonen relative to Massa. They’ve fueled him lighter in each Q3 session in which they’ve both made it, and they compromised Raikkonen’s race with a stupid pit call in Malaysia. Have they forgotten that Raikkonen is the one who is the world champion and elite talent?

    3. Alonso put in a poor lap. Hamilton’s was on par.

      BTW Hamilton was 6th in Q2 at China, so it shouldn’t be a surprise that he can be quick in Q2 again.

      His current position seems fuel load based though. In Q2 he was 8th.

  4. Looks like both BMW will play a one stop strategy

  5. Do the Ferraris know something others don’t? Kimi seemed to have a reasonably good pace in Q2, why would they throw the pace advantage away by loading up the cars with fuel similar to the Q2 (11-15) guys?

    1. The first 7 cars are all likely going to use supersofts in the first stint and Ferrari isn’t. Also James Allen said Ferrari manage to let Kimi without new supersofts for Q3, so he had no shot there anyway.

    2. It seems Ferrari keeps running out of tyres for Kimi…

  6. Disappointing if you are a Brawn fan as they seem to be falling down the order already, they will be mid table by mid season unless they improve their car.

    1. They got a major update planned for Spain – but so do a lot of their rivals…

    2. I think their main problem will be that their car has already been developed much further than the others. They won’t be able to develop as fast as the other teams, but I still think that they are among the favourites for both titles.

  7. This time around, the weight don’t change the times so much. Apart from Glock and Vettel there is not such big difference between the first 7 guys. The other 3 were slowest and they have the heaveir cars.
    Vettel times shows 2 things, he’s damn quick and the RB5 is indeed a very good car (and remember no double-deck diffuser there).

    Let’s see if the 1 stop strategy for the BMW’s work. Only the resistence of the super-soft tyre can tell, but they also might not due a 1-stop, but actually have 2 very short-stints after the first one

  8. Vettel is looking very strong. I think Lewis will jump Button at the start.

    A Trulli train will make things very exciting, with a number of good racers bunched up and looking to attack at the first mistake. I hope Glock jumps Trulli and gets away, I’d like to see him win.

    Raikkonen needs to track Rosberg and jump him during the pit stops (I’m convinced Kimi has forgotten how to defend and pass on the track) while fending off Heiki. With him doing that and at least one attrition up front, we’ll finally see both Ferraris score points this weekend. Both the drivers and strategists need to focus on doing an error-free race with no fancy attempts at going radical.

    Let’s hope there are no sandstorms.

  9. Why was the three place grid penalty for Adrian?

  10. Bigbadderboom
    25th April 2009, 16:59

    @Arun He slowed Webber when Webber was on a flyer.

    Very dissapointed I hoped jenson was heavier than that, very suprised that Lewis’s pace is now a match for the Brawns, I think the early stoppers really need to get their feet down, there are some very long runs down the field, Kimi and Heiki are going long, this has the potential to be a great race.

  11. oh i ate my words on my post on fp2, ferrari did not lose those 2 sec , they have pace. but still their race engineers prefer fueling heavy than the others. haven’t they learned that kimi is at best mediocre when has mor fuel on board? last year he always had more fuel and most of the time it didn’t help his pace, always sleeping.

    again the problem for ferrari is the race, either reliability or other factors(strategy) that’s why they’re strugling.

    vettel is proving that last year’s torro rosso performance isn’t a fluke. what amazing talent. and unless RBR reverts or drops down back to its pre-2009 performance, and ferrari or mclaren (which is much improved than in testing) get their head straight and win races, i don’t see vettel jump ship

  12. The teams that are running KERS, does this make them less fuel efficeint? For example if Lewis, Massa,etc are due in on 13 and 17 respectively does this decrease by a lap or more?? Just wondering???

  13. I reckon theres gunna be a train behind hamilton, what with C.U.R.S.E., So I believe this ones between Vettel & Glock with trulli or hamilton in 3rd.

    I am never right when it comes to predictions though!

  14. @F14EVA,

    I would speculate that KERS would make the cars more fuel efficient, if anything.

    But there may be interactions that I don’t know about that have secondary effects that minimize or turn-around the advantage of regenerative braking (which is actually converting fuel energy that would have been lost as heat, into a usable form).

    1. They should be the same with regards to fuel efficency becuase it gives you extra power. So the power is ON TOP of the usual engine power.

  15. @Chris,

    That would be true if the KERS were deployed when the engine was at maximum power and maximum revs. If this is not the case and the KERS is used much before then, I would think the KERS might help a car achieve it’s top speed (rev limiter) on a straight with less fuel being used to get to that top speed.

    Does that make sense or am I just confused?

    1. I think you are probably right. However i think the kers power does not count towards to the rev limiter i dont know why i think that tho?

  16. John Spencer
    25th April 2009, 17:42

    Keith – James Allen has the cars doing two more laps than your calculations. Who’s right?

    1. James Allen might be forgetting about the lap to the grid and the formation lap, plus the cars presumably don’t come into the pit completely empty.

    2. Exactly how many laps to deduct for going to the pits etc.. is a bit hard to judge. Alternatively, maybe he’s got a different figure for fuel consumption per lap (he hasn’t shown his working, so I can’t tell!)

      Either way, what’s most significant is the difference between the drivers – who’ll stop first and who’ll stop last – and on that the two sets of figures seem to be broadly in agreement.

    3. Keith, could you compare your pit-predictions against the real stops for the previous races? That would give us a feeling of how trustful can be in general (and you could correct your future predictions if, for example, you’re getting consistently a 3 lap bias). China won’t be meaningful, in any case :-)

    4. I’m keeping an eye on it, but as you say the data for China is useless.

  17. Nice one from Toyota, although the fuel loads are significanly lower than the rests’ of the front runners. Vettel? What can I say- cool as ever…Expect both BMWs to move up at the start and further as the race continues. Also HAM should gain a few spots, good luck to him. Might be an interesting race. See you all on liveblog 2moro.

  18. As Hamilton said, the reason they are a lot closer is because this track doesn’t have very fast corners, so their downforce deficiency is not so obvious.

    Vettel has the fastest and the most well balanced car on the grid, pity for Webber he got lost in the crowed.

    I wonder how BMW will use the super soft tyres for an extended duration.

    For the sake of humanity, I just hope Ferrari don’t mess this race up.

  19. I’m still laughing about Sutil taking the slipstream on Webber. That took the cake.

  20. KingHamilton&co
    25th April 2009, 18:35

    Looks like tommorrows race will be between kates dirty sister, Beardy, the italian one and maybe a Glockenspiel……………..

  21. By the way does anyone know what Rosberg has on his car that Nakajima is lacking? Sam Micheals mentioned something to that effect.

    1. sajonaraman
      26th April 2009, 9:48


  22. Mouse_Nightshirt
    25th April 2009, 18:48

    Is it just me that’s really excited to see two Brits wheel to wheel again?

  23. What I see from these table ,Vettel has more advantage from any other driver.When you corrected speed according to additional fuel He’s faster than Toyotas .He can win these race too.

  24. Toby Thwaites 93
    25th April 2009, 20:19

    We can expect both BMW’s to hold up the back half of the field with their KERS for half of the race :)

  25. According to, fuel usage per lap is about 2.6kg ( which could explain more why both BMW are heavily loaded – if this 2.6kg is the correct number, then it means that KUB will pit on 35 lap, what means _only_ 22 on softs which is of course risky, but…

    Hopefully we will see interesting race for BMW, even with this insane strategy :)

    1. Using Keith’s method and the fuel usage:

      93.6/2.6 – 3 = Lap 33 with 24 laps on super-softs. Risky!

      Keith, what about posting a table of the Estimated and Actual first pit stops after the race? Might make interesting reading.

      Personally, I can’t see the sense of Kubica and Heidfeld being so heavy. I’m sure it’s not possible to do 24 (or 27, depending on actual fuel consumption) laps on the super-softs. 22 + 22 + 13 seems the conservative way to go for the back markers.

  26. this race has the potential to have multiply kers trains all over the race.If lewis gets the jump of the start you could kiss any advantage getting on pole gives you away.The bbc were showing comparisons with jenson and other cars threw corners entry and exit to which jenson was always ahead on the exit but then they hit kers and all his advantage was gone.I think we maybe in for another winner this race as well.

  27. The two Toyota’s in the front row will remind me of Marlboro McLaren :) Good ol’ days.

  28. Brawn4Constructors
    25th April 2009, 23:46

    Trulli will go wire to wire. Bahrain is often won from the Pole.
    Note that Kimi finished 3rd in 2006 after starting 22nd, so the 1 Stoppers have a legitimate shot, though the soft tire stint will hurt them badly.
    At +400, my money is on Trulli ( and a little on Vettel at +500 from earlier in the week).

  29. The Sri Lankan
    26th April 2009, 0:15

    Considering the lap time penalty of carrying extra fuel is around 0.035s per kg, on a fueladjusted grid, i rekon Trulli would still have been on pole away from vettel. still, i think toyota should deploy some team tactics to keep the hard charger Vettel, Hamilton and alonso at bay. ideally i think it would be best if jarno kept everyone back while glock gets away since he really need to punch in the fasteset times as he is pitting i before Truilli and Vettel. this way Jarno could also open the door for Vettel being attacked by Hamilton or Jensen or maybe even alonso.

  30. John Spencer
    26th April 2009, 0:38

    James Allen’s first stop figures are similar to Autosport’s, and from these it’s possible to work out their method –

    1. Deduct 608kg car weight (versus your 605)
    2. Assume 2.7 Kg of fuel used per lap
    3. Take off only 2.7 Kg for grid + formation laps + reserve
    4. Divide the remainder by the 2.7 Kg per lap

    1. It gets even more confusing – Allen now claims fuel consumption is 2.9kg/lap and the BBC reckon 2.6kg/lap.

      For the record I got my data from Williams who say “To complete a normalised distance of 5km around the Bahrain circuit requires 2.66kg of fuel.” Over a 5.412km lap that means 2.879kg/lap.

  31. Prisoner Monkeys
    26th April 2009, 0:38

    Button may have admitted that Brawn are no longer the class act of 2009, but I’m still gunning for him. Always have, always will.

  32. Can someone explain to me why Glock hasn’t had a grid penalty? I thought his engine went foom on Friday?

    1. Maurice Henry
      26th April 2009, 1:38

      No mention of any engine problems in statements from Friday. See following link re: Friday practice

  33. Maurice Henry
    26th April 2009, 1:30

    I think Ferrari are acting very conservatively as Montezemolo is coming to the race. With field spread in the early laps I expect them to be well out of the picture by the first round of pitstops. I copied a spreadsheet based on the James Allen one that appeared in the Giorgio Piola books until 2006. Based on the info I’ve got and some estimates on refernce lap times and fuel weight (@ reference lap time) I reckon (1) Ferrari will finish about 30-odd secs off the winner and (2) BMW (who I think are in worse trouble than Ferrari – when did they start looking at their 2009 car? Answer, a lot earlier than Ferrari did) will be lucky to finish the race within 45 secs of the winner on a one stopper. Someone (i.e. Toyota) might even go three stops. On paper 3 stops is about 16 secs quicker than a two stopper (pitting about L20 and L40) not factoring in traffic (i.e. field spread). Of course most of this will go out the window if a KERS car gets in amongst the fast cars at the start. I hope Alonso or Hamilton gets in front and backs the faster cars up into the pack.

  34. look for either Trulli and or Hamilton cause a a train behind them as they become moving chicanes in 1st stint, which will work wonders backing everyone up for a flying M Webber to catch up by over a second per lap.
    Webber will be up to 11 or 10th by end of lap 1.

  35. also amazing to see the Brawn star fade so quickly…2races!!!

    I said the RB cars were bullets in pre-season testing to anyone that would listen to me or even if they didnt and was laughed at…usually by the same folk that were adamant that McLaren were sandbaging, and Ferrari were going to walk it in…lol

  36. I think we can expect the Heikki and the BMWs to finish in the points, providing they keep their noses out of trouble.

    Heikki drove a very good race last time out and looks like thats his plan again today, as he’s pretty heavy. Heidfeld will also do the same, he might even get lucky with a podium…long shot. I’m really unhappy with Kubica this season. In Melbourne he looked to have genuine pace, but its petered off quite a bit since. I suspect he’s not exactly comfortable with the car setup.

    I’m betting on Vettel to win the race, with Button also pushing all the way.

  37. Hmm…. BMW still not looking strong – long-/short/short-stint strategies never work… from memory anyway. BMW are really my only disappointment this season – and I freely admit that it’s beacause Kubica’s Polish.

    Without crazy stuff happening, Vettel looks like the winner for this one.

    Peace out – have a great race everyone.

  38. Great job by Trulli and Hamilton, especially since the latter is on the same fuel as Button, and actually more than Rubens.

  39. 0.035 s/kg *10 kg (to vettels)=0.35 s per tour.If Trulli pits 12 th tour then (0,35 s/tour*12 tour=4.2 s)he will be only 4.2 s ahead of vettel.Vettel make pit after 4 tour.He easly come ahead of Trulli

  40. Also Trulli will came from pits at 12 th tour and behind of many bacmarkers.Vettel will make pits at 16 or 17th tour and will came 2 th or third.But race is race.Anything can happen in the race

  41. I think that KERS would have nothing to do with fuel efficiency, think of it as a NOS system for F1 (using a different fuel, in this case energy stored from braking) to enable the engine to reach its maximum rpm faster.


    Keenly awaiting the F1 tonight!!

  42. Grid kg Est Actual Fin
    01 TRU 43.5 12 s 13 m 38 s ---- 03
    02 GLO 38.0 10 s 13 m 34 s ---- 07
    03 VET 54.0 15 s 20 s 40 m ---- 02
    04 BUT 47.5 13 s 15 s 37 m ---- 01
    05 HAM 47.5 13 s 15 s 38 m ---- 04
    06 BAR 44.0 12 s 14 s 27 s 48 m 05
    07 ALO 45.5 12 s 17 s 38 ---- 08
    08 MAS 59.5 17 s 02* 30 47 - 14
    09 ROS 65.5 19 m 22 46 m ---- 09
    10 RAI 66.5 20 s 21 s 45 m ---- 06
    11 KOV 73.5 22 m 13 m 38 ---- 12
    12 NAK 75.9 23 s 02* 31 s 50 RET
    13 KUB 93.6 29 m 02* 35 ---- 18
    14 HEI 91.3 28 m 02* 38 ---- 19
    15 PIQ 72.6 22 s 24 43 ---- 10
    16 BUE 73.5 22 s 22 40 ---- 17
    17 FIS 47.0 13 s 16 38 ---- 15
    18 WEB 51.0 14 s 15 38 ---- 11
    19 SUT 74.0 22 s 24 42 ---- 16
    20 BOU 62.5 18 s 19 s 37 ---- 13

    * Early stop: KUB, NAK nose cones. MAS HEI unknown.

    OK, I tried to make myself useful seeing as I couldn’t log on to the Live Blog, but I could get F1 Live Timing.

    Here’s a comparison between the estimated first pit stops and the actual. Note that the lap numbers are taken from the Commentary on Live Timing. On the chart they register as one lap earlier. Also shown are tyre choices, where given on Commentary.

    Main differences: VET +5 ALO +5 KOV -9 (!). Obviously, unexpected pit stops not counted.

    Columns: Grid position, Driver, Estimated first pit stop, Actual pit stops, Finishing position.
    s = super soft tyre, m = medium tyre

    1. Please remove the above.

  43. Let me try that again…

    Grid nbsp; nbsp; nbsp; nbsp;kg nbsp; nbsp; nbsp; Est nbsp;Actual nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;Fin
    01 nbsp;TRU nbsp;43.5 nbsp;12 s 13 m 38 s ---- 03
    02 nbsp;GLO nbsp;38.0 nbsp;10 s 13 m 34 s ---- 07
    03 nbsp;VET nbsp;54.0 nbsp;15 s 20 s 40 m ---- 02
    04 nbsp;BUT nbsp;47.5 nbsp;13 s 15 s 37 m ---- 01
    05 nbsp;HAM nbsp;47.5 nbsp;13 s 15 s 38 m ---- 04
    06 nbsp;BAR nbsp;44.0 nbsp;12 s 14 s 27 s 48 m 05
    07 nbsp;ALO nbsp;45.5 nbsp;12 s 17 s 38 nbsp; ---- 08
    08 nbsp;MAS nbsp;59.5 nbsp;17 s 02* nbsp;30 nbsp; 47 - 14
    09 nbsp;ROS nbsp;65.5 nbsp;19 m 22 nbsp; 46 m ---- 09
    10 nbsp;RAI nbsp;66.5 nbsp;20 s 21 s 45 m ---- 06
    11 nbsp;KOV nbsp;73.5 nbsp;22 m 13 m 38 nbsp; ---- 12
    12 nbsp;NAK nbsp;75.9 nbsp;23 s 02* nbsp;31 s nbsp;50 RET
    13 nbsp;KUB nbsp;93.6 nbsp;29 m 02* nbsp;35 nbsp; ---- 18
    14 nbsp;HEI nbsp;91.3 nbsp;28 m 02* nbsp;38 nbsp; ---- 19
    15 nbsp;PIQ nbsp;72.6 nbsp;22 s 24 nbsp; 43 nbsp; ---- 10
    16 nbsp;BUE nbsp;73.5 nbsp;22 s 22 nbsp; 40 nbsp; ---- 17
    17 nbsp;FIS nbsp;47.0 nbsp;13 s 16 nbsp; 38 nbsp; ---- 15
    18 nbsp;WEB nbsp;51.0 nbsp;14 s 15 nbsp; 38 nbsp; ---- 11
    19 nbsp;SUT nbsp;74.0 nbsp;22 s 24 nbsp; 42 nbsp; ---- 16
    20 nbsp;BOU nbsp;62.5 nbsp;18 s 19 s 37 nbsp; ---- 13

    1. Please delete the above.

  44. Oops! Sorry, Keith. Trying one last time…

    Grid        kg       Est  Actual                  Fin
    01  TRU  43.5  12 s 13 m 38 s ---- 03
    02  GLO  38.0  10 s 13 m 34 s ---- 07
    03  VET  54.0  15 s 20 s 40 m ---- 02
    04  BUT  47.5  13 s 15 s 37 m ---- 01
    05  HAM  47.5  13 s 15 s 38 m ---- 04
    06  BAR  44.0  12 s 14 s 27 s 48 m 05
    07  ALO  45.5  12 s 17 s 38   ---- 08
    08  MAS  59.5  17 s 02*  30   47 - 14
    09  ROS  65.5  19 m 22   46 m ---- 09
    10  RAI  66.5  20 s 21 s 45 m ---- 06
    11  KOV  73.5  22 m 13 m 38   ---- 12
    12  NAK  75.9  23 s 02*  31 s  50 RET
    13  KUB  93.6  29 m 02*  35   ---- 18
    14  HEI  91.3  28 m 02*  38   ---- 19
    15  PIQ  72.6  22 s 24   43   ---- 10
    16  BUE  73.5  22 s 22   40   ---- 17
    17  FIS  47.0  13 s 16   38   ---- 15
    18  WEB  51.0  14 s 15   38   ---- 11
    19  SUT  74.0  22 s 24   42   ---- 16
    20  BOU  62.5  18 s 19 s 37   ---- 13

    1. Damn. The headings are off line. Otherwise what I wanted. As before…

      * Early stop: KUB, NAK nose cones. MAS HEI unknown.

      OK, I tried to make myself useful seeing as I couldn’t log on to the Live Blog, but I could get F1 Live Timing.

      Here’s a comparison between the estimated first pit stops and the actual. Note that the lap numbers are taken from the Commentary on Live Timing. On the chart they register as one lap earlier. Also shown are tyre choices, where given on Commentary.

      Main differences: VET +5 ALO +5 KOV -9 (!). Obviously, unexpected pit stops not counted.

      Columns: Grid position, Driver, Estimated first pit stop, Actual pit stops, Finishing position.
      s = super soft tyre, m = medium tyre

  45. John Spencer
    27th April 2009, 14:37

    The formula above seems to give too much fuel for grid+formation+reserve. In the race, most of the front runners ran longer than expected from these figures.

    As martinb points out, both Alonso and Vettel ran a lot longer than expected. I checked with the Autosport figures, and Alonso and Vettel ran longer than they estimated. Autosport (working on 2.7kg per lap) allowed only 1 lap of fuel for getting to the grid, the formation lap and any reserve.

    So somehow Vettel and Alonso managed to start the race without using any fuel … or there’s something wrong with the figures we’ve been given.

    1. One option could be that their engines (both Renault) consume less than the average figure people is using to make the calculation (but then, Keith is using the number given by Renault itself!). Other options that come to my mind:
      – they managed to save fuel while being stuck behind other slower cars (Vettel behind Trulli, I don’t remember Alonso)
      – there is probably one lap worth of weight in liquids that are not fuel (water, oil, brake fluids) and that doesn’t count towards the 605kg limit (as far as I remember, it’s ‘605kg with the driver, but emptied of all liquids’, not only fuel). Probably that’s why Autosport figure for the base weight is 608kg
      – I remember something about the ruling on how the teams inform their weights that said something like ‘not all the cars will be weighted before the race, but if one is chosen to be weighted it’s real weight must be at less than 5kg of the informed weight’ (check the real figure, please). So you can slightly misinform the number to win some tactical advantage, leading the others to believe that your’re lighter than you really are by a couple of laps.
      At the end, the predicted numbers are only educated guesses, with a probable error of a couple of laps in an uneventful race (in the scientific world you would say that anybody predicted to pit between laps 12 and 14 are pitting basically in the same lap). Put in another way: from Keith’s numbers, the only thing you can say is that Glock should come first, then all the other top-7 but Vettel together, then Vettel slightly latter, then the other top-10 probably a couple of laps latter. Vettel and Alonso are the odd data that some time appears in experiments (but where the fun is…)

  46. Maurice Henry
    27th April 2009, 22:55

    Thanks for the data martinb

  47. Maurice Henry
    27th April 2009, 23:00

    John – Don’t know if you saw Christian Horner interview on BBC Forum, but he said Vettel saved 3 laps of fuel in one of his stints. I am guessing that the firing up in the pits, the lap to the grid and the parade lap are run with the cars running very lean to conserve every possible drop that they can. Back in 2006 the FIA fuel credit for Sakhir was 2.75 kg/lap.

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