I keep harping on about the same thing over and over. My tyre test in Spain @ 16c, was a real eye opener.
The H tyres where PL5 it wasn't until they reached 50% wear they started to have trouble with the low temp.
The M tyres where PL4 & PL5 they had no trouble with the low temp until they had 67% wear (33% life left).
All the issues in the past when H was out classing all others, was because they where never getting anywhere near 50% tyre use & they where only 0.1 slower than M. So reverting back to the way tyres once where will only work if you increase the wear rates of M & H and keep the current speed differences (Delta Times) between the tyres.
The H tyres where PL5 it wasn't until they reached 50% wear they started to have trouble with the low temp.
The M tyres where PL4 & PL5 they had no trouble with the low temp until they had 67% wear (33% life left).
All the issues in the past when H was out classing all others, was because they where never getting anywhere near 50% tyre use & they where only 0.1 slower than M. So reverting back to the way tyres once where will only work if you increase the wear rates of M & H and keep the current speed differences (Delta Times) between the tyres.
what would happen then to strategy choice?
S, SS, and Maybe M obsolete. That solution would work if there would be an even harder tyre a super hard. Then there would be a dominant pair of hard and superhard
If you would Change the wear rates that the hard is wearing under 50% and has to stay there for a while that the effect you explained will work, so lets say, after 12 laps so it will be under 505 for 3 laps when we assume a 60 lap race.
Then you could use the ss Maybe for 3 laps the s for 6 and the m for 9.
The idea with temperature is good but not based on the wear rate.
Lets say it would be posible to implement that you are just not able to get the h warm at 15 Degree and the ss and s will overheat at 25 and 30 Degree.
As from the developers mentioned that would need a bigger update.
Strategy choice would be pick the tyre for the temp.
10c SS & S
16c SS S & M
20c S M & H
25c M & H
30+ H
In order to get a good balance all the tyres are going to have to have high wear rates.
Spain
M 17 laps is 50% wear
H 19 laps is 50% wear
That will have to be changed
17 laps x by 4 stints = 68 laps of a 66 lap race
19 laps x by 4 stints = 76 laps of a 66 lap race