MELBOURNE -- World champion Michael Schumacher has more records in his sights this year but the pressure of expectation is resting easily with the German, his brother and rival Ralf Schumacher has said.

"I understand Michael is not here to break any records. He's simply here because he enjoys it and he wants to win another title," Ralf Schumacher told a news conference in Melbourne ahead of Sunday's season-opening Australian Grand Prix.

Ferrari's Michael Schumacher has won the past two world championships and four in total, and the highest-paid driver in Formula One is favourite to lift the title again this year.

Since 1957, nobody has equalled the late Argentine Juan Manuel Fangio's five world championships.

Michael, 33, is also aiming to become the first driver since Fangio to win three successive championships.

"If he isn't relaxed, who else should be relaxed? He has nothing to lose, does he?," said Williams driver Ralf, who was fourth in last year's championship.

"His (Michael's) main worry is to get in a new car at the moment, that's all he's thinking about. He doesn't have to prove anything."

Ferrari have decided to run with last year's car at Sunday's Australian Grand Prix.