Search new + high quality used tires online. 18 Inch Tires, starting at: $21.99. Tires in stock: 39416 tires. Available brands: 252 with 2206 models in 163 sizes. All season: 34808. Winter: 3180. Summer: 2018. Run flat: 1229. 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!