Search new + high quality used tires online. Size 215 50 R18 starting at: $97.65. Tires in stock: 57. Available brands: 8 with 12 models. All season: 51. Winter: 6.. 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!