Search new + high quality used tires online. Size 225 50 R18 starting at: $47.99. Tires in stock: 332. Available brands: 45 with 141 models. All season: 242. Winter: 47. Summer: 43. Run flat: 37. 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!