Tyre Wear at 100% on race starts in F2

look, I was doing a run here of 35% and I think I know what happens, I calculated and marked the lap I did in qualifying (complete) of just one lap and the tire was 12% left front 13% right front 10% rear left and 11% rear right in Qualy. I did the Sprint with a new soft tire and at the end of the Sprint Race it was 62% on the front and 59% on the rear and I went to the race, when I put the soft tires on for the feature race they were 53% on the front and 50% on the rear, so I understood that the game adds 40% of damage to the tire after you use it in the Qualy (complete) regardless of how much you saved, if you finished the Qualy with the tires at 25% in the feature race it will appear with 65% spent because the game is putting 40% damage on the tire. now why that i don't know.