Alonso concerned about Bridgestone form

Ferrari and Bridgestone were dominant in 2004, scoring 15 wins in 18 races, but only took one victory last season as the Michelin-shod teams dominated thanks in part to the one-tyre rule.

But rules have changed for this year and tyre changes will be back.

Bridgestone will also count on two more teams - Williams and Toyota - to carry out its development work.

And after seeing Bridgestone's performance in winter testing, Renault driver Alonso is hoping Michelin will react.

"It looks like Bridgestone is in very good shape and I'm afraid they could have another season like two years ago and dominate the way they did," Alonso told reporters during testing at the Jerez circuit.

"I hope Michelin does something to avoid that."

When asked who are the rivals he fears most for 2006, the Spaniard had no doubts.

"Michael Schumacher," he said.

But Alonso, who will leave the Renault team after this season, has warned that his motivation has not changed despite having achieved his goals last year.

"I never lose any ambition and if we started a football game right now I would play as motivated as ever. I never change my level of ambition," Alonso added.

"The best I can do this year is become champion again and that's what I'm going to focus on and what I'm going to fight for."