Search new + high quality used tires online. Size 235 50 R18 starting at: $48.42. Tires in stock: 391. Available brands: 60 with 187 models. All season: 314. Winter: 57. Summer: 20. 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!