Sorry, I’ve lost track of the source but I read an online F1 site claiming that the key to McLaren’s speed was the ability to control rear tire temperatures.
For the timebeing, McLaren’s secret is safe and no one yet knows how they’re doing it but the data shows they’re getting longer life out of the rears despite accelerating harder out of the corners by somehow keeping them cool.
Sort of like when Red Bull was blowing exhaust on the rears on the start grid to keep them warm while the slow cars formed up for the start, only in reverse.
Found the reference for the above post.
https://www.the-race.com/formula-1/mclaren-2025-f1-car-advantage-theories/