Not a great day for Button

Barcelona, February 21th, 2013 (F1plus). – Two things seem to be bugging Jenson Button; not enough laps and the uneven understanding of the McLaren MP4-28. The Briton lapped today a full second slower than what teammate Perez had achieve yesterday.

Button completed 71 laps today, and with rain the forecast tomorrow, surely that number will not be higher.

"It's going to be wet tomorrow so it is going to be tricky, and for me, I don't feel that I have had enough laps in the car and I think it is the same for Checo as well,"

Today, McLaren mechanics had to work to change the car setting and the delayed Jenson’s time on the track for the afternoon session about an hour.

Button was not hiding his feeling about the team being a bit behind the learning curve and that time on the track has not be the ideal.

"In terms of laps completed and the testing that I have achieved, yes, I think we're behind on that. And a lot of it has been because we've been doing certain tests that have taken a bit longer than we wanted and as soon as one change takes longer it rolls into the next change and then it's lunchtime. So most of our testing is done in the afternoon these days!

"So it's not been perfect and we know we've got a lot of work to do in terms of spending more time out on the circuit and understanding the car." Said Button.

Then it is the issue of the car’s uneven performance, which might justify the difference in time between both drivers one day to the next.

"It's been very tricky to understand where the car is. At times the car feels good, at other times it doesn't. “He said.

"A lot of that is basically understanding the car that we have and understanding the way it's working and making sure it's working the way we expect it. Some of the time that hasn't been the case.

"But there are times when the car's working pretty well. Today on hards I did a 1m22.8s, which I don't think is a bad lap with the fuel that we had on board. And Checo [Sergio Perez] did a 1m21.8s on softs yesterday, which is also pretty good.

"At Jerez we showed pace, but we also showed that we don't have pace at other times.

"We don't know where we are and there's no point trying to compare us to other people. We've got to sort out our own issues and get the best out of the car." The Briton added.