The thick, solid rubber or polyurethane foam treads provide the cushioned ride of an air-filled pneumatic wheel without the possibility of a flat tire.

Also known as semi-pneumatic wheels, these have a tough, puncture-resistant tread surrounding a nonpressurized pocket of air to cushion like a pneumatic wheel without going flat. Their spoked hub keeps them lightweight at larger sizes.

These wheels have an iron core for greater capacities than other rubber wheels with the same quiet, smooth ride.

Also known as balloon tires, these have a rounded, cushioned tread for easy turning and good shock absorption.

Solid rubber wheels offer a durable ride with no possibility of tread separation.

The rounded tread on these wheels allows them to turn more easily than flat-tread wheels.

Rugged and long lasting, iron wheels can withstand chemicals, high temperatures, and heavy loads.

These lightweight wheels provide impact resistance on smooth surfaces. They are the most economical wheel option.