Marathon Industries 4.80/4.00-8-Inch Flat Free Wheelbarrow Tire With Ribbed Tread - 15.5-Inch Type: Wheels & Tires Features: Perfect for contractor wheelbarrows Black in color, ribbed tread 500-Pound load capacity Not for highway use Most common tire for 6 cubic foot wheelbarrows, 15.5-inch tire diameter, mounted on a steel rim with a 6-inch centered hub and 5/8-inch ball bearings