Late on Friday evening Pirelli discovered damage to tyres caused by kerbs, and the company informed the FIA single-seater director Nikolas Tombazis of their findings.
By Saturday morning and with more information having emerged from Pirelli’s investigation, the FIA had formulated a response.
It decided on changes to track limits at Turns 12-13, added an extra practice session to the schedule, while also making provisional plans for three mandatory stops and a maximum stint length for Sunday’s main race.
That was communicated in a letter from Tombazis to the teams that was sent just a few minutes before the media was informed via a press release.
With team personnel and drivers still in their hotels or travelling the track, a lot of drivers found out either from the media or from WhatsApp communications with each other, before their teams had a chance to inform them.
Sainz was also frustrated that the organisers appeared not to have learned any lessons after the tyre issues experienced in F1's most recent visit to the track in 2021.
“If safety is necessary then we have to do it,” said Sainz of the changes.
“Obviously I don’t appreciate and I don’t like that we were here in 2021, and in the meantime there has been two years to react to these bad kerbs.
Source: Autosport