Search new + high quality used tires online. Size 235 50 R18 starting at: $43.97. Tires in stock: 408. Available brands: 77 with 174 models. All season: 387. Winter: 12. Summer: 9. 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!