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

Tires with an inner tube are more puncture resistant than tubeless tires. Ball bearings are the easiest to roll.

Center-mount hubs are symmetrical for equal clearance on both sides of the wheel.

Two-piece rims consist of two pieces bolted together so the wheels can be quickly repaired or replaced.