Agree. Actually tire graphs in LFS are far from being linear and look pretty normal. But something wrong with that thouhg. I've always been wondering
about that grip regaining, when slip angle go to zero after sliding.
In LFS that moment feels very soft, non precise and unrealistic.
In real life there is a sharp and springy effect when you pass zero angle, getting sudden lots of grip. Even on road cars with road tyres.
In other words, in LFS we have too low grip in low slip angles and too much grip in high slip angles. That tends to easy and grippy drift but to sliding in grip races
And in LFS it always was too easy to catch the car from critical conditions
because of that low difference of grip(it's impossible to give a car a sharp impulse first and then to loose much grip).
But lateral tire graph looks OK. I suspect the main problem is longitudal
tire behaviour.