Search new + high quality used tires online. 20 Inch Tires, starting at: $30.88. Tires in stock: 9425 tires. Available brands: 203 with 1269 models in 129 sizes. All season: 7628. Winter: 566. Summer: 1331. Run flat: 441. 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!