UNIVERSAL REPLACEMENT 4.80/4.00-8" Tubed TIRE AND WHEEL SET - Fits utility equipment that use tires and inner tubes that have an outer diameter of 15.7 inches and a width of 3.75 inches. For a proper fit, the utility equipment should also be compatible with wheel rims that are about 8.75 inches in diameter, a 3-inch centered hub, and 3/4-inch Sintered iron bushings. PLEASE DOUBLE CHECK THE SIZE HIGHLY COMPATIBLE WITH WHEELBARROWS AND UTILITY TRAILERS - These tire and wheel assemblies are highly compatible with a wide variety of utility equipment including hand trucks (dollies), trolleys, garden carts and trailers, wheelbarrows, wagons, pressure washer and air compressor carts, and so much more! TUBED TIRES FOR LIGHT TO HEAVY-DUTY APPLICATIONS - Nothing can beat the feel and easy handling that comes with air-filled tires. These tire and wheel assemblies come with non-highway service (NHS) tires and thick inner tubes with a maximum psi of 30. And with a maximum load capacity of around 400 pounds, these tires are more than capable of handling commercial-level hauling tasks. QUICK AND EASY INSTALLATION - There's no need to take your utility equipment to the shops for a change of tires.