Search new + high quality used tires online. Size 235 50 R18 starting at: $48.42. Tires in stock: 388. Available brands: 61 with 186 models. All season: 315. Winter: 55. Summer: 18. Run flat: 14. 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!