Pneumatic Tires and Air-Filled Wheels

What you get with an air-filled tire

Each wheel here is a tube-type tire on a steel rim with bearings in the hub [S1]. The rim style matters more than most buyers expect: a centered hub sits in the middle of the tire for caster forks and equipment axles, while an offset hub sits to one side for hand trucks and portable equipment [S1]. Check which one your axle needs before you order.

Air pressure is the setting you control. Hamilton describes it as variable flotation: let some air out to cushion a light, fragile load, or inflate to the maximum for the easiest rolling and full rated capacity [S2].

Sizes and ratings on this page

Ratings are per wheel from the product fields and descriptions [S1].

Bearing bores of 1/2, 5/8 and 3/4 in are offered on the CasterHQ pneumatic wheels, so the same tire can fit several axle sizes [S1]. The B&P 4-ply wheel is built for outdoor ground: gravel, grass, sand, snow, slush and mud [S3].

Where air beats solid tires, and where it does not

• Good fit: generators, pressure washers, compressors, landscape carts and any load that has to cross dirt, lawn or cracked lots. Pneumatic is the top cushioning choice and works well outdoors and on uneven ground [S4].
• Fragile loads: Hamilton lists its pneumatic casters for electronics, ceramics and liquids, where shock is the main risk [S2].
• Poor fit: sharp debris, scrap yards or anywhere a flat stops work. Rubber pneumatic tires are rated low for abrasion and chemical resistance, and the Hamilton 16 in pneumatic is rated -30 to 120°F [S5]. Keep them away from ovens, solvents and hot pavement in summer sun.
• Heavy loads: one 10 in tire tops out at 350 lb here. For more, use dual-wheel pneumatic casters, which run 620 to 7,700 lb per caster [S1].

Air-filled, foam-filled or solid rubber

From CasterHQ product fields [S1].

How to choose

1. Measure the old tire across the tread and top to bottom. An 8 x 3 and a 10 x 3-1/2 will not swap on the same fork.
2. Match hub position and bore. Offset for most hand trucks, centered for casters. Then match the bearing bore to your axle.
3. Check load per tire. Divide the loaded weight by the number of tires touching the ground. If the answer is over 350 lb, step up to a dual-wheel caster or solid rubber.
4. Decide if a flat would hurt. If yes, the foam-filled and solid tires above are the same footprint without the tube.

Need the whole caster rather than the tire? See pneumatic casters and off-road casters.

Air-filled wheel questions

Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com

Sources

• [S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.
• [S2] Hamilton Caster, Cush-N-Aire 7000 Series pneumatic casters and catalog page: ply ratings by size, variable flotation, foam-filled and gray non-marking tire options.
• [S3] B&P Manufacturing 10 x 3.5 in 4-ply wheel listing on CasterHQ: steel hub, 5/8 in bore, sealed precision bearings, recommended for gravel, grass, sand, snow and mud.
• [S4] Hamilton Caster, Industrial Caster Wheels overview and Phenolic & Polyolefin page (hamiltoncaster.com/Wheels): capacity range and use notes for each wheel family; phenolic is resin with macerated canvas, polyolefin is blended polymers such as polyethylene and polypropylene.
• [S5] Hamilton Caster, R-70166-PR spec page: 16 in pneumatic, 1,220 lb at 3 mph, 90 psi max, rated -30 to 120°F, cushioning highest, abrasion and chemical resistance low.