Thanks Carlston for detailed answer.
My winter tires is Continental 235/45/18.
Now on my Superb is Uniroyal Rainsport 5 235/50R18 97V, but this is little slipping tire, I am nnot happy with it when it comes to sliding braking. Last summer tires Continental PC 235/45/18 is much better for braking, but so hard on bumps.
I have no requirements for fast driving, mostly my is driving from 80km/h - 110 km/h on open road (Here we have no highways and most of the roads are of poor quality)
I read that the Michelin Primacy 4 is a soft tire and that it is comfortable, what do you think about that, in the dimension 235/45/18?
Last solution is to move on dimension 17 inch, but with that dimension the car is a little "ugly", or refitt some DCC or another suspension, but I still dont know which