Istanbul: Jenson Button made the most of improved weather conditions to post the fastest time in the second practice for the Turkish Grand Prix on Friday, and his McLaren teammate Lewis Hamilton was third quickest.
The two British drivers made the most of improving conditions after morning rain made the Istanbul Park circuit dangerous and slippery, causing Formula One champion Sebastian Vettel to crash unharmed.
Temperatures improved slightly and the track dried out for the afternoon session, when Germany`s Nico Rosberg matched his impressive morning with the second quickest time.
Button, the 2009 F1 champion, set a best lap of 1 minute, 26.456 seconds.
Seven-time champion Michael Schumacher and Mark Webber completed the top five.