Search new + high quality used tires online. 20 Inch Tires, starting at: $27.09. Tires in stock: 9766 tires. Available brands: 197 with 1338 models in 135 sizes. All season: 7380. Winter: 1018. Summer: 1398. Run flat: 413. 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!