Sainz’s 1m31.247s set on the C3 tyres headed the times by 0.236s from Sergio Perez in the Red Bull, who also set his best time on the C3 compound, on another stalled morning of testing.
The final day of testing was halted after only 27 minutes when a drain cover came loose on the outside kerb approaching Turn 11 – the same spot where another drain was dislodged and disrupted running on Thursday.
