Friday analysis - Red Bull spring a surprise, Ferrari fire a warning
Conditions proved consistent on Friday in Kuala Lumpur, allowing the teams to complete their assessments of Pirelli's hard- and medium-compound tyres and to do some race simulation runs. And while Mercedes hit the front as expected, they were given pause for thought by Ferrari - who themselves appear to be only fractions of a second ahead of Williams and a resurgent Red Bull. With tyre degradation causing headaches all along the pit lane, we could be set for a fascinating battle at Sepang...