Brawn GP - Car Weights - Barcelona

Pos  Driver       Weight (KG's) Predicted Fuel Stop
 1.  Button       646           18
 2.  Vettel       651.5         19
 3.  Barrichello  649.5         19
 4.  Massa        655           20
 5.  Webber       651.5         18
 6.  Glock        646.5         16
 7.  Trulli       655.5         20
 8.  Alonso       645           16
 9.  Rosberg      668           26
10.  Kubica       660           22
11.  Nakajima     676.6         30
12.  Piquet       677.4         30
13.  Heidfeld     676.3         29
14.  Hamilton     683           32
15.  Buemi        678           30
16.  Raikkonen    673           28
17.  Bourdais     669           26
18.  Kovalainen   657           21
19.  Sutil        675           29
20.  Fisichella   656           20

So as I would have thought the times mean all the front runners are fairly similar on fuel loads. Massa is obviously the one to watch out for in the mix with a little more fuel on board, if he can get the usual KERS run at the start combined with being able to hang onto the back of Jenson, Vettel and Rubens he may well figure strongly.