Search new + high quality used tires online. 20 Inch Tires, starting at: $25.99. Tires in stock: 18933 tires. Available brands: 212 with 1635 models in 151 sizes. All season: 14479. Winter: 1558. Summer: 2599. Run flat: 569. 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!