Search new + high quality used tires online. Size 235 50 R18 starting at: $43.25. Tires in stock: 628. Available brands: 56 with 186 models. All season: 565. Winter: 42. Summer: 21. Run flat: 23. 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!