Search new + high quality used tires online. Size 235 50 R18 starting at: $39.14. Tires in stock: 818. Available brands: 54 with 178 models. All season: 743. Winter: 52. Summer: 23. Run flat: 71. 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!