Search new + high quality used tires online. Size 225 50 R18 starting at: $47.99. Tires in stock: 274. Available brands: 48 with 127 models. All season: 227. Winter: 26. Summer: 21. Run flat: 23. 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!