Search new + high quality used tires online. Size 235 50 R18 starting at: $55.94. Tires in stock: 311. Available brands: 59 with 150 models. All season: 254. Winter: 46. Summer: 11. Run flat: 8. 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!