BBC Sport - Formula 1: Red Bull tyres not good enough - Sebastian Vettel

Red Bull tyres not right - Vettel

Formula 1 world champion Sebastian Vettel says his tyres were "not good enough" during pre-season testing.

The Red Bull driver finished eighth in the final pre-season test on Sunday, with Mercedes's Nico Rosberg posting the fastest time.

The new season begins on Sunday, 17 March in Melbourne.

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