– Valtteri Bottas says he experienced "more consistent" tyre degradation on Pirelli's development 2015 rubber at this week's Abu Dhabi test.The Williams driver carried out the first day of running for the team at the Yas Marina Circuit, completing 80 laps en route to the fastest time."It was interesting to try the new Pirelli tyres against the old, we felt a few differences and that is knowledge that we will take forward for next year," said Bottas."The tyre degradation is a lot more consistent so Pirelli has done a good job with the new compound."Bottas is also optimistic about the outfit's progress with development parts for its new challenger."We...
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