Unresolved

I would like tyre info

Tyres do my head in, no matter how much I study them, they don't make since to me.

4% wearing Hard in Turkey
100 -6
94 -5
89 -5
84 -4
80 -4
76 -4
SKIP all the way to near end
45 -4
41 -4
37 -4
33 -3
30 -3
27 -3

Can say a hard tyre has 4 changes, the 4th being lower than practice wear rate of 4% when the tyre is dying.
Super not a problem.

But look at 6% wearing Medium
100 -7
93 -5
88 -5
83 -5
78 -5
73 -4
69 -5
64 -4
60 -4
56 -4
52 -4

And now look at 8% wearing Soft
100 -9
91 -7
84 -7
77 -7
70 -6
64 -5
59 -6
53 -5
48 -5
43 -5

Should they not be starting lap one 2% higher wear than stated in practice, same as Hard
Then changing to 1% higher wear for 3 or 4 or 5 laps depending on the compound
Then pinging the standard wear rate for awhile
Then dropping 1% lower than that which practice stated
Then quickly drop and match Hard 
Then dropping off the cliff

At some point in a race all 4 tyres have to be equal paced and pumping out identical laps. But I don't see it, so someone please share their tyre info with me to end the madness!

You want to know how tyre wear is calculated? The exact pace drop once it wears beyond a certain point?

Tyre wear is a bit easier to explain as there is data easily available from race results page, so I'll just answer that. 
They seem to drop by a percentage decrease. The percentage shown on your practice laps is the whole number of the percentage decrease (feel free to correct me if I'm wrong but I'm certain it's meant to be a percentage decrease). It is not a fixed decrease lap after lap.

For example, Boomer uses his favourite tyre, Supersofts, at some track, with some tyre economy.

After lap one the SS wears down to 85 tyre life. This is a 15% decrease as: % Decrease = [Decrease / Original number] x 100

First, we have to find the Decrease

Lap     Tyre life
0         100
1           85

Decrease = Original number - New number. Hence 100 - 85 = 15. This is also a 15% percentage decrease as the Original number is 100, making the equation simple in this case.

Now let's have Lap 1 and Lap 2

Lap     Tyre life
1           85
2           72

The Decrease is not 15 but 13; 85 - 72 = 13. So the decrease between Laps 1 and 2 is less by 2 compared to the decrease between Laps 0 (for ease of calculation) and 1.

Onto the percentage decrease: 

% Decrease = [13 / 85] x 100

= 15.29%

More or less still around 15%. Of course you'll find it can change lap by lap. May turn out to be 16% for laps 3, 4, 5, then the % Decrease would grow more as it wears below 50 tyre life even as the Decrease gets gradually smaller, but this calculation is still a good reference point.

There are some "iGP Manager Calculator" apps that'll give you tyre wear per lap easily just by inputting the percentage wear shown on your practice laps. Of course the actual wear you'll get in the race will be a bit different as there are factors like push levels, temps, and other little things or algorithms that'll influence tyre wear. So this calculation should just be taken as a reference.

Generally speaking, tyre life of below 50 would start to noticeably affect pace, and the drop in pace would intensify the more the tyre wears. 

Even full wet's don't skip numbers, so why are SS, S and M skipping?

lap 1 100 -15  .. 100 -15
lap 2 85 -13    .. 85 -14
lap 3 72 -13    .. 71 -14
lap 4 59 -12    .. 57 -13
lap 5 47 -11    .. 44 -13
lap 6 36 -10    .. 31 -12
lap 7 26 -9      .. 19 -12
lap 8 17 -8      .. 7
lap 9 9

100 divided  by 15% = 6.666666666666667
No skipping wear ratios is closer to 7 laps than the current 
4 changes in a Full Wet and a Hard tyre the rest should be the same?

This "skipping numbers" is just an error due to rounding to a full number. Ignore it. Look at the bigger picture, i.e. degradation over a few and not just a single lap.

Since you mentioned a single lap!
Germany
M after 8 laps is 66% health & H after 9 laps is 66% health and H is 1 second a lap slower than M.
At the other side S after 6 laps is 66% health and they are 0.739 seconds a lap faster than M.

So looking at the bigger picture isn't too helpful LOL

In simple terms this is a game of many variables... Just like real life... The tyre wear graph is not a straight line... Its a curve .... In the first few laps of a stint the deg is a lot more than after 10 laps for example.

Secondly as mentioned previously the deg can be effected by temps, weather, drivers skills and how hard the driver is pushing on straights and corners etc... 

Additionally if a hard tyre has reduced to 66% life and a soft also wears down the same 34% the lap times will of course be different due to differing compounds. 

The point of all this is to challenge you as the player to adjust your racing strategy in real time based on changing variables... Otherwise it would be a very different and boring game

I don't get ur point. Ur data simply suggest, Hards are not useful.

Your conclusion seems to be that the data is wrong.

Anyway, I just tried to help. I won't argue with u.
And btw, if someone has 10k rep, most of the time he knows a thing or two about this game...

But H is useful and the tyre data is screwy because it doesn't tell you everything.
Not only is there speed difference between compounds but also a 1 litre fuel hike for using a harder tyre over same length of stint. 
Push Levels of tyres could do with more balancing also.
SS 10°C PL3 burns up the tyre after 5 laps and PL2 cools it down
S 10°C PL4  burns up the tyre after 8 laps and PL3 cools it down
M 10°C PL5 burns up the tyre after 8 laps and PL4 cools it down

Evan M would be faster than SS over a 9 lap stint, never mind S that have double the health.

66% health of a tyre in Hungary
SS 4 Laps
S 8 Laps
M 11 Laps

There is no strategy unless it's racing forced to use 2 compounds

66% health of a tyre in Europe
SS 3 laps
S 6 laps
M 8 laps
H 9 laps

21°C Push Levels
SS can use PL5 for 1 sector to get them in middle of optimal temp. Drop to PL1
S can use PL5 for 1 sector. Drop to PL2
M can use PL5 for 2 sectors. Drop to PL3
H can use PL5 for 2 sectors. Drop to PL4

Nothing worth reporting 
Wet start Belgium 9°C Push Level
H PL5 burns up the tyre and PL4 cools it, 7 Laps is 66% tyre life


Would think with low temps at any track the H & M would struggle to get near the operating window, with S just falling short of perfect in PL5. SS Overheating on PL5 and PL4 cooling them, but sadly not..