Formula 1 tyre supplier Pirelli completed on Wednesday its two-day test conducted at Silverstone with Red Bull Racing and Williams. The running was done within Pirelli's 2020 development programme in which all teams take part at one point or the other during the season. Car set-up is set in stone and not allowed to change while no development work is permitted by the teams. Teams and drivers do not know what compounds they are testing as tyres are marked with special codes identified only by Pirelli's engineers. Pirelli working on extending 'working range' of tyres for 2020 Red Bull and Williams were nominated for this week's test, with the Milton Keynes-based outfit running Pierre Gasly...
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