"It was very different to winter testing and a lot tougher on the tyres," said Rosberg after practice. "It has been a very challenging day first of all to see how to get the car right for qualifying and especially how to get it right for the race.
"I don't know where we are on tyre wear. We will have to look through the data now. Tyre management is going to be crucial here."
Michael Schumacher has criticised the Pirelli tyre in latest week and sees tyres as the main challenge faced by the team, and he done eighth fastest today.
"That's a challenge," he said of tyre degradation. "We have to find out more and analyse it too see what we did compared to the other guys. We have four of them [tyres] each time we go out and it's the same for everybody."
Images © Mercedes GP/ Getty Images
All material and photos are copyrighted material and owned by their respective owners. Use or depiction of images or trademarks throughout this website is for illustrative and editorial purposes only.Images come courtesy of; ferrari.com, mclaren.com, Sahara forceindiaf1.com, redbull.com, mercedesgp.com, Caterham F1, toyota, Sauber, williamsf1, lotus, Marussia, HRT, Daylife.com, getty Images/LAT and AP Photos.
