Search new + high quality used tires online. Size 235 50 R18 starting at: $52.56. Tires in stock: 272. Available brands: 47 with 128 models. All season: 226. Winter: 35. Summer: 11. Run flat: 18. 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!