Formula 1 will switch to 18-inch tyres in 2021.
The news comes after the FIA released the 2020-2023 tyre manufacturer tender process.
In 2020, the tyres will remain as they are now, and then switch to the all-new low profile in 2021.
"I think the biggest challenge will be for the tyre manufacturer. If it's a change of manufacturer, it will be doing two different types of tyre over the space of a year," said Renault's Bob Bell.
The new rules will also ban tyre warmers.
"I support it 200%," said Sauber's Frederic Vasseur. "Tyre blankets are a nightmare and in Formula 2, they cope very well without them."
The 2018 calendar continues tomorrow with the German Grand Prix.
