two designes for smooth tire:
1) press on solid tires
2) mould on solid tires
They are widely used on the smooth floor,some industrial vehicles including forklifts, milling machines and tow trucks often use this tire. because of their wide and flat tread pattern, these tires have high performance of stability and low resistance for running.
Smooth tire also can be made into non-marking tire. non-marking tires(also called clean tires or environmental-friendly tires) with colorful rubber compound are designed to operate where clean floors are a priority.No mark is left on the ground when it is running or braking.