The official F1 supplier's Paul Hembery said recently that despite expecting the field to be significantly faster this year, the tyres will not fundamentally change.

"This year's tyres will be evolutions of the 2014 tyres," he confirmed on Thursday, "with just one completely new tyre - the super soft, which has a fresh rear construction and compound."

The 2015 tyres will be in action at the opening winter test at Jerez beginning on Sunday.