Search new + high quality used tires online. Size 245 40 R21 starting at: $50.69. Tires in stock: 28. Available brands: 6 with 10 models. All season: 6. Summer: 22. Run flat: 18. 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!