An increase fuel allowance plus harder tyres will make most races one-stoppers in 2019, according to Renault technical chief Marcin Budkowski.
The combination of an increased fuel allowance plus a more conservative tyre selection will lead to a lot of one-stop races in Formula 1 this year, according to Renault technical chief Marcin Budkowski.
F1 will increase the permitted amount of fuel for races from 105kg to 110kg in a bid to allow drivers to push harder through races, with the same goal prompting Pirelli to take a more conservative approach to its tyre picks in 2019.

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