Jenson Button says 'unusual' nature of Spanish GP means order won't stabilise yet

Jenson Button doubts whether this weekend's Spanish GP will actually prove as decisive to the shape of the season as some observers have suggested.

"There's a lot that's different you'll be able to see. The aerodynamics of the car, you'll understand the difference in airflow of the car. Hopefully it works. Maybe it all won't work, but we've just got to get a better understanding and a better correlation back at the MTC [McLaren Technology Centre]. "But if we get a good correlation between the circuit and the wind tunnel that's just as important as seeing an improved lap time this weekend." And echoing team-mate Sergio Perez's Thursday caution, Button added: "It looks nice - there are some really cool little bits on the car - but I don't think it's really going to be enough to fight right at the front. We will see an improvement and hopefully that will help us understand the airflow of the car a little bit better." Furthermore Button admitted he would settle for a more straightforward progression in to the top-ten shootout in qualifying. "I've been in Q3 every race which is a surprise really - that's why I was so excited in Bahrain! But, yes, a car that can get into Q3 and not be right on the edge of falling out in Q2 would be a good step forward for us," he conceded. "But the important thing for us is more the understanding with the correlation with the wind tunnel. Looking at straightline testing [that McLaren carried out prior to arriving in Spain] we have a better understanding."