Thanks Trevor for your answer!
I have visited Lexus dealer today to they check vibration. Luckily they had a time to check that out. They check balance (did not find anything). Also they make a wheel rotation. Thats all they did.
The vibration is now much much lower. Now it feels more like light tingle what could be felt only on good new freeway asphalt.
So I probably will wait little while if this gets worse or may be better. This sounds strange that vinbration was almost fixed by the wheel rotation...