Search new + high quality used tires online. Size 245 40 R21 starting at: $82.93. Tires in stock: 14. Available brands: 4 with 5 models. Winter: 1. Summer: 13. Run flat: 13. 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!