Did some testing. And decided that tire is fine, laptimes are good, car is on point, and it is quite managable over the limit, so I don't know whats the problem, am I driving it too well or what, I don't know. I'll just pretend that others can drive too. The only thing which I am thinking about to "improve" would be slightly more rear wheels cooling. Few degrees cooler rears will help quite a bit to provide a bit more confidence. In general I use teperatures to control the limit of a car, so I can't make the tires to be "green" all the time, otherwise it will be just way too fast, or I will have redesign whole tire again, which no one will like anyway just me, and I'll just waste lots of time, and make myself less happy by making something that I believe less.