Search new + high quality used tires online. 18 Inch Tires, starting at: $34.99. Tires in stock: 12886 tires. Available brands: 199 with 1336 models in 135 sizes. All season: 11771. Winter: 796. Summer: 518. Run flat: 1083. 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!