Search new + high quality used tires online. 20 Inch Tires, starting at: $34.84. Tires in stock: 5974 tires. Available brands: 144 with 848 models in 116 sizes. All season: 4709. Winter: 287. Summer: 950. Run flat: 581. Selling all used tires at discount costs. All used tires go through 2 layers of inspection on specialized equipment. One year warranty + free shipping on all inventory ;) Happy shopping!