July 9, 2014

Pirelli tested 18-inch wheels and low-profile tyres in 2014

© Mark Thompson/Getty Images

July 9, 2014

Lewis Hamilton in the Mercedes garage

© Sutton Images

July 9, 2014

Giedo van der Garde's Sauber returns to the pits on a recovery truck

© Sutton Images

July 9, 2014

Charles Pic heads out on track on Pirelli's 18-inch concept tyres

© Sutton Images

July 9, 2014

Sebastian Vettel puts his Red Bull and its test Pirelli tyres through their paces

© Getty Images

July 9, 2014

Julian Leal prepares to join the track for Caterham

© Sutton Images

July 9, 2014

Lewis Hamilton leaves the pits with an aero sensor on his Mercedes

© Sutton Images

July 9, 2014

Valtteri Bottas snatches a brake

© Sutton Images

July 9, 2014

Jules Bianchi waits to start another run during his test at Silverstone

© Ferrari

July 9, 2014

Jules Bianchi pulls out of the pit lane during his test for Ferrari

© Sutton Images

July 9, 2014

Charles Pic puts the first lap on Pirelli's low-profile concept tyres

© Sutton Images

July 9, 2014

Charles Pic on track testing Pirelli's new low-profile tyres

© Sutton Images

July 9, 2014

Charles Pic on track in the Lotus, fitted with 18-inch wheels

© Sutton Images

July 9, 2014

Pirelli's low-profile, 18-inch tyre

© Sutton Images

July 9, 2014

Pirelli's low-profile tyres fitted to the Lotus E22

© Sutton Images

July 9, 2014

Pirelli's low-profile tyres on show for the first time at Silverstone

© Sutton Images