Friday form guide: Red Bull back in business

Friday form guide: Red Bull back in business

Sebastian Vettel's Singapore Friday form suggests Red Bull's woes are over, but as Mark Hughes uncovers, Ferrari and McLaren are also realistic victory contenders

Singapore presents special challenges – and they are pretty much the same each year: it's a race that's all about trying to maintain a good pace without losing your brakes or running out of fuel.

The fuel tank sizes – and thus the general dimensions of the cars – are based around the fuel usage at this race. The tanks hold around 160kg of fuel, and that's a marginal amount around here, especially if there is no safety car (though that has never happened in the previous four events here), and the engine's performance has to be monitored very carefully.

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