Flat Free Tire Foam & Foam-Filled Tires · 250–280 lb

How a foam-filled tire works

The tire carcass is filled with closed poly-foam, so it carries the load the way air would, minus the risk of losing it. That makes it a drop-in fix for hand trucks and carts that keep coming back flat. Hamilton sells foam-filled wheels as an option on its Cush-N-Aire pneumatic casters for the same flat-free purpose [S1].

Product fields [S2].

Gains and give-ups against air

• No flats, no pump. Good for rental fleets, construction sites, recycling yards and seasonal equipment that sits unused.
• Fixed firmness. An air tire can be softened for delicate loads [S1]. A foam tire cannot, so it transmits more bump to the load.
• Capacity is similar to air at 8 in (250 lb either way) and slightly lower at 10 in: 280 lb foam against 350 lb for our 10 x 3-1/2 in air tire [S2].
• Same limits on heat and chemicals as any rubber-treaded tire. Keep them off hot ovens and solvent spills.

Foam-filled or solid rubber?

If you need more than 280 lb per tire, our solid recycled-rubber tires carry 450 lb at 8 x 2-1/2 in and 650 lb at 10 x 2-3/4 in [S2]. They ride harder than foam. If cushion matters more than flat protection, go back to air-filled tires.

Ordering the right one

1. Match the diameter and tread width of the tire you are replacing.
2. Choose offset for most hand trucks and centered for caster forks.
3. Confirm the bearing bore on the listing matches your axle.
4. Check per-tire load: total weight divided by the tires on the ground.

Foam-filled tire questions

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

Sources

• [S1] 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.
• [S2] 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.