Search new + high quality used tires online. Size 225 50 R18 starting at: $48.08. Tires in stock: 345. Available brands: 45 with 139 models. All season: 256. Winter: 46. Summer: 43. Run flat: 51. 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!