Tubeless Tire For Wheelchair 4.10/3.50-6 Solid Tyre 1. Product Introduction of 13 Inch Wheelchair Tires PU Filled Solid Rubber Tire, simply called FF Tire, consists of two parts: rubber outer tube, microcellular polyurethane elastomer filled or inserted inside. With the superior performance in the aspects of inflation free, anti- puncture, flat free, good cushioning and high security etc., it is widely used in the field of wheelchairs, mobility scooters strollers, sweepers and so on. While satisfying customers esthetic-demand for traditional rubber tires, it also conquers the defects of air-filled tires: the potential risks of easily punctured, gas leakage, flat tire and frequent maintenance. Therefore, it is one of the best choices for electric wheelchairs. The Brand Of Rubber Tires mainly is Cheng shin Or Innova. Its Max. Loading Is About 75KGS per Wheel.