Bike ride not smooth
I have similar treads and vibration on my hardtail. Some solutions:


Reduce the pressure, but this will increase rolling resistance, thus reducing efficiency. I don't recommend this one. I would prefer to keep the vibration than to reduce my efficiency.
Just replace the tires to smoother ones. I recommend this one because smoother tires will not only make your ride smoother, but also increase efficiency. You should do this unless you are on a limited budget.