THE TIRES ARE SOLID AND THEY ARE INTERCHANGEABLE. 48in. working width, 3in. penetration, 32 carburized steel tines on eight disks, soild tires, all steel weight tray with 200lbs. capacity, assembled dimensions 58 1/2in. L x 18in. W x 19 1/2in. H, weight 86lbs. The hitch is a drawbar hitch, uses a pin-and-cotter-pin assembly.