Search new + high quality used tires online. Size 215 50 R18 starting at: $47.99. Tires in stock: 56. Available brands: 9 with 13 models. All season: 46. Winter: 10.. 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!