Jenson Button is optimistic that Brawn GP has got to the bottom of the tyre heating issues that have stalled his world championship campaign - but says the team will only find out on Friday whether such faith is justified.

Button's title lead has been slashed by Red Bull Racing duo Mark Webber and Sebastian Vettel in the last three races, with Brawn GP's cars struggling for grip after being unable to get its tyres up to operating temperature.


However, Button believes that work undertaken over the summer break at Brawn's Brackley factory has produced the answers as to what has gone wrong - and tests will be conducted in Friday practice in Valencia to work out if the team's work has been a success.


"Well, after the break and after the two weeks when they couldn't work at the factory, they spent a few days to work on the car and come up with some ideas," said Button ahead of this weekend's European Grand Prix.


autosport.com - F1 News: Button thinks tyre problems are fixed