Marathon 10x2.75" Semi-Pneumatic Tire on Wheel 10x2.75" Tire. 10" Tire Diameter. 2.75" Tire Width. Semi-Pneumatic Tire made of rubber. Ribbed Tread. No flats! 2.3125" Centered Hub. 5/8" Ball Bearings. Multi-purpose replacement tire. 300 lb load capacity. Not for highway use.