Search new + high quality used tires online. Size 235 50 R18 starting at: $48.93. Tires in stock: 409. Available brands: 68 with 180 models. All season: 354. Winter: 46. Summer: 9. Run flat: 6. 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!