KEY PARAMETERS? Tire and Wheel Model: 13×6.50-6; Tire Diameter 13″; Tire Width: 6″; Bearing Diameter: 3/4″ or 5/8″; Centered Hub Length: 4″-4.5″-5″-5.5″-6″-6.5″; Dynamic Load Capacity: 440LBS. This solid tire is suitable for dynamic load and not recommended for long-time high static load. EXTRA ADAPTER KIT? The 13×6.50-6 solid tire is a pre-assembled 4″ centered hub and 3/4″ bore bearing. Considering that the wheel and bearing sizes of different, we also come with four 5/8″ bore bearings, eight 1/4″ and 1/2 wide wheel nylon spacers, and four steel washes, making it easy to adjust to various hub sizes. PUNCTURE-PROOF & INFLATE-FREE? The solid air-less tire is made of premium PU (polyurethane) foam with no inner tube, which has the features of high strength, good wear-resistance and tear-resistance. So you don’t have to worry about a flat tire. REPALCEMENT FOR? 13×6.50-6 solid tire suitable for zero turn mower front tire assembly compatible with lawn mower garden tractor. Please check the tire on the existing sidewall, and measure the hub and bearing sizes to ensure proper replacement.