Search new + high quality used tires online. Size 225 50 R18 starting at: $47.99. Tires in stock: 492. Available brands: 57 with 151 models. All season: 396. Winter: 31. Summer: 65. Run flat: 136. 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!