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 consist of an air-filled rubber tire on a steel rim and are among the quietest, most shock-absorbing wheels available.

These lightweight wheels are commonly used on carts. They are filled with compressed air to provide the best shock absorption and a quiet ride.

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

Nylon or aluminum cores make these wheels lighter and more corrosion resistant than iron-core wheels without sacrificing capacity.

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