Lewis Hamilton has described a lap of the Istanbul Park circuit as "terrifying" after low-grip conditions saw drivers lap several seconds off the predicted pace during practice for this weekend's Turkish Grand Prix.
Hamilton, who can win his seventh title this weekend, finished the session fourth fastest as all 20 drivers struggled for grip.
The Istanbul Park circuit was recently resurfaced ahead of the grand prix and the smooth surface, which had seen very little use ahead of Friday's practice session, made it difficult to get the tyres up to temperature.
"It's terrifying the whole way around," Hamilton said.