Search new + high quality used tires online. Size 225 50 R18 starting at: $34.99. Tires in stock: 436. Available brands: 52 with 153 models. All season: 339. Winter: 34. Summer: 63. Run flat: 74. 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!