Search new + high quality used tires online. Size 245 45 R21 starting at: $64.36. Tires in stock: 23. Available brands: 3 with 8 models. All season: 14. Summer: 9.. 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!