Max Verstappen has declined to elaborate on the crucial knowledge he gained in the Azerbaijan Grand Prix that transformed his season.
In Baku, Verstappen gave a fruitless chase of Sergio Perez in the sister RB19, but admitted that he "tried a lot of stuff and different tools in the car", [and that] he had implemented the "quite interesting" findings.
After those lessons were learnt, the Dutchman went undefeated between May 1st and September 16th, taking in 10 Grands Prix between Miami and Italy and two Sprints in Austria and Belgium.
When pushed to explain those findings, Verstappen declined, but made clear that looking after the tyres was part of what he had learnt.
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"I can't go into details, but it's been a nice step forward from that race in just looking after the tyres," Verstappen explained to media including RacingNews365.
"I just got more confidence in feeling how I could attack corners and the balance and feedback I would get from the car."
In Singapore, Verstappen's winning run came to an end at a record 10 Grands Prix with the root cause of the RB19's failure on the Marina Bay streets being attributed to a set-up issue.
Verstappen conceded that the team did have some ideas but that it was "annoying" that those could not be tested until 2024.
"I think we have a lot of ideas, but we can't really show that until next year," he explained.
"That is a little bit annoying but in another way, it gives us a bit of time to fully understand everything and also work on trying to improve the car for these kinds of tracks."