Search new + high quality used tires online. Size 235 50 R18 starting at: $47.99. Tires in stock: 391. Available brands: 62 with 177 models. All season: 319. Winter: 56. Summer: 16. Run flat: 16. 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!