Solved

Stamina

I have a (little) problem I don't understand: my first driver has stamina 20 and second has stamina 17, at the and of a race in monaco first driver ended with health 63 and second driver with 62, both starting with health 100. I expected a bigger difference than 1 point of health, because of difference in stamina. What do you think about this, is it worth training in stamina?
Thompson:

Palmer:

You will be able to judge better for yourself and let the rest of us know in the next race.
I have not looked at stamina affects since the changes.
Old data per lap using high & very high was:
20 & 19 = -1
18 & 17 = -2
16 & 15 = -3
so on and so forth

The way it is now all drivers lose same amount up to a certain amount of laps, then only using very high you get -1 after the cut off point for 20 stamina drivers, lower ratings I don't know.

How this looking stop losing health on lap 40 of 58

I always forget after around 60% race distance, drivers stop losing health. Been two years since I raced in a full length league...

Thank you for your answers, I will look at better next races and let you know.

Shots above
Petrov & Button 20 Stamina finished the race with high 80+ health (elite tier)
Button & Moss 3 Stamina finished the race with high 60+ health (rookie tier)