Chinese GP winner Nico Rosberg is expecting tougher time in Bahrain

The German driver secured his maiden pole position and his first race win in Formula 1 in Shanghai, as his car proved to be the class of the field.

But with hotter track temperatures predicted for Bahrain this weekend, Rosberg admitted it was hard to know what to expect, despite Mercedes having made progress on tyre management.

"This is a track I really enjoy," Rosberg told a news conference in Bahrain. "I have some very good memories here, but it's difficult to know where we are going to be.

"In Shanghai we did very well, but previously we did have issues in the races, so it's possible it could be a bit more difficult here."

He added: "The engineers have been making good progress. We are learning very quickly. We did a good job and got the best out of it. The situation is different here with the temperatures and that might mean a bit more of a challenge."

The Mercedes driver, who won by over 20 seconds in China, conceded everything had gone his way in Shanghai.

"Everything came together. I was on top of my game all weekend. The car and the set-up were working quite well, it was enough to win by some margin. All in all it was a really strong weekend."