Ferrari's Fernando Alonso has become the latest Formula 1 driver to confirm the number he has requested for the 2014 season.
Ferrari says it has seen encouraging signs of progress from Pirelli during this week's Formula 1 tyre test in Bahrain.
Mercedes driver Nico Rosberg escaped unhurt after a high speed blow-out during tyre testing in Bahrain on Thursday.
Pirelli says the safety of its 2014 Formula 1 tyres is not in question despite the blowout that forced Mercedes to end its Bahrain test early on Thursday.
Mercedes lost ground in the second half of the 2013 season because it over-reacted to its early tyre degradation problems, reckons team boss Toto Wolff.
Nico Rosberg will be the only man in charge of carrying out driving duties for the Mercedes team during the upcoming tyre test in Bahrain.
The FIA has contacted Formula 1 drivers to select the permanent race numbers they will carry from next year.
Sebastien Buemi will drive for Red Bull for all three days of next week's Pirelli tyre test in Bahrain.
Sebastian Vettel and new Ferrari team-mates Fernando Alonso and Kimi Raikkonen will sit out Formula 1's forthcoming Pirelli tyre test in Bahrain.
Will Gray worries that the funding of Formula 1 'pay drivers' is now universally more important than actual racing ability.
Niki Lauda says he expects to see departing Mercedes team principal Ross Brawn back in Formula One.
Sebastian Vettel hopes that Formula 1 does not lose any of its thrill factor next season when it switches to turbo V6 engines.
Niki Lauda expects departing Mercedes team principal Ross Brawn to return to Formula One in some capacity.
Seven times world champion Michael Schumacher hailed Sebastian Vettel's record-breaking Formula One season on Friday and said the gulf between his fellow German
Bahrain Grand Prix
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