Sebastian Vettel says he is prepared to flout rules that state drivers cannot change their helmet design during the 2015 Formula 1 season, saying he will donate any subsequent fine to charity.

The German, who switches to Ferrari this year, is known for regularly getting commemorative helmets created for certain races, not least in 2014 when he wore different designs for Monza, Austin and his Red Bull swansong, amongst others.

However, under new rules imposed by the FIA for 2015, drivers can now only nominate one design and maintain it for the rest of the season effectively ruling out any in-season changes.

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It is a directive that has baffled Vettel, but one that he doesn't necessarily plan to adhere to, claiming any fine imposed by the FIA will be paid to charity.

"I don't know, it seems that in these difficult times, it is the only thing people can agree on," he said. "So, I don't know - what is the penalty? If it is a little fine with money for charity, then I am happy to keep changing my helmet."

Vettel has already debuted his helmet for 2015 during pre-season testing with a mostly white lid and splashes of the German flag.