Race ace Nando's F1 quit warning.

TWO-TIME Formula One world champion Fernando Alonso has threatened to quit the sport over proposed rule changes.

The Spanish star is the most successful driver racing in F1 today but he branded the proposals as nonsense, revealing he would rather race anywhere else than the cut-price pounds 40m series the FIA want to introduce in 2010.

Alonso's comments come amid growing tension between leading teams and FIA President Max Mosley ahead of Friday's deadline.

Two teams have caved in to the demands while others want better governance and a gradual introduction to cost cutting measures.

At the Turkish Grand Prix the rebel teams' drivers backed plans for more discussion about the way the sport is run.

And Alonso lent his support to the idea of a possible breakaway series.

He said: "I would prefer to race in any category before the new F1.

"The teams have done their maximum - they have signed up for 2010. But you cannot suddenly move from a budget of pounds 450million to one of pounds 40m a year.

"If the manufacturers organise a parallel event that would be interesting as you would see the technology and the fastest cars in the world."

The rebel teams, including Ferrari and McLaren,said their entries for 2010 are invalid unless Mosley makes changes.

But the FIA say on Friday they will choose from among the 14 new entries submitted.

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AL BE A GONER: Alonso