Search new + high quality used tires online. Size 245 45 R21 starting at: $86.48. Tires in stock: 32. Available brands: 3 with 6 models. All season: 21. Winter: 4. Summer: 7.. 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!