Search new + high quality used tires online. Size 275 45 R21 starting at: $30.24. Tires in stock: 356. Available brands: 13 with 43 models. All season: 289. Winter: 17. Summer: 50.. 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!