Schumacher has been testing hard since the last race

Schumacher trails Alonso by 24 points ahead of Sunday's San Marino Grand Prix after a disastrous start to the year.

"Fernando will have to keep the championship in mind now and will have to be more careful," Schumacher said.

"But I have nothing to lose, so I can attack and push. All the other drivers can take more risks than him."

Renault have dominated the start of the season, with Alonso winning the last two races from pole position, and his team-mate Giancarlo Fisichella the season opener in Australia.

The team's new R25 car has been the class of the field, and has already proved it should work well on all types of track.

Our goal is to start winning races again and I think our chances are quite good Michael Schumacher

But Schumacher said Renault will inevitably hit a bad patch sooner or later.

"The events this season have been working in Fernando's favour, but that won't be likely to stay that way," the 36-year-old said.

Schumacher has won the San Marino Grand Prix five times in the last six years and is hopeful he can win his first race since the Hungarian event last August.

"There's no two ways about it: our goal is to start winning races again and I think our chances are quite good," said Schumacher.

"The fight for the championship title is not anywhere near its decisive phase yet. The season is quite long yet, there will be lots of changes still," he said.

Schumacher has tested the new F2005 extensively since its troublesome debut in Bahrain three weeks ago.

The 36-year-old will limber up for Sunday's race by playing in a charity soccer match in San Marino's Olympic Stadium on Wednesday night.