Pneumatic, foam filled or solid tires are used in wheelchairs and scooters.
Pneumatic tires : These tires contain air filled tubes. Can be deflated or inflated at will. More comfortable to ride because they can absorb shock better. Good in all terrains. Air pressure should be checked regularly. Risk of puncture and accident deflation is high. But anti puncture liquids can be used to solve this problem.
Foam tires : These tires are filled with foam instead of air. No maintenance requires. Foam tires are Expensive. Do not absorb shock as well as pneumatic tires.
Solid tires : Name says it all. These tires are made of solid, rubber, plastic or combination of both. Poor shock absorbing quality. Intended for indoor use. Less expensive of all tires.
Note : Width of the tire and the depth of the treads play an important role in maneuverability in different types of terrains. Wider tires with deep treads can be used in rough terrains but maneuvering in indoors and cramped space is difficult.