July 4, 2013

McLaren team principal Martin Whitmarsh in the paddock

© Sutton Images

July 4, 2013

McLaren mechanics work on the team's allocation of tyres

© Sutton Images

July 4, 2013

Sergio Perez walks through the paddock

© Getty Images

July 4, 2013

Jenson Button in the paddock on Thursday

© Sutton Images

July 4, 2013

McLaren engineers check tyre pressures in the paddock

© Sutton Images