F1 could use prototype 2020 tyres in 2019 races

Mercedes' dominant form and the struggles some teams have had to get the thinner-tread 2019 tyres into their working range led to an attempt to reintroduce Pirelli's thicker-gauge 2018 rubber.
That was not approved at a meeting between F1 teams and stakeholders on Friday morning at the Red Bull Ring ahead of the Austrian Grand Prix, but other options were discussed.

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