Search new + high quality used tires online. Size 225 50 R18 starting at: $47.99. Tires in stock: 374. Available brands: 43 with 135 models. All season: 252. Winter: 67. Summer: 55. Run flat: 60. 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!