Pirelli has increased the minimum starting tyre pressures for the French Grand Prix and set several new restrictions in line with updated rules which come into force this weekend.
Pictures from the build-up to the 2021 French Grand Prix, where Fernando Alonso and Nikita Mazepin have traded helmets.
Max Verstappen and Lance Stroll's crashes occured because their tyres were running at lower pressures than expected, say Pirelli.
Valtteri Bottas and George Russell have denied rumours Mercedes have decided which of them will drive for the team in 2022.
Sebastian Vettel said he doesn't have complete confidence in the structural integrity of F1's tyres following the failures at the previous round in Azerbaijan.
Max Verstappen and Lance Stroll say they were lucky their tyre failures in the Azerbaijan Grand Prix did not cause more serious crashes.
Mick Schumacher says his team mate tried to "scare" him in Baku, but Nikita Mazepin insists the incident was a "misunderstanding".
Valtteri Bottas will use a different chassis for the French Grand Prix, but he says the change is not related to his poor result at the last race.
Max Verstappen has insisted neither Red Bull nor Aston Martin are to blame for the tyre failures he and Lance Stroll suffered during the Azerbaijan Grand Prix.
Lewis Hamilton says Pirelli were not to blame for the failures which put two drivers out of the last race in Baku, and called for F1's new tyre restrictions to be aggressively enforced.
Formula 1's head of motorsport Ross Brawn has urged fans to keep an open mind about the new 'Sprint' races which will be introduced next month.
The French Grand Prix is expected to be overcast for much of the weekend, with a slight chance of rain showers on race day.
In the round up: Grosjean's Mercedes test delayed • London mayor pushing for grand prix • Ferrari third-fastest but progressing - Binotto