Search new + high quality used tires online. Size 245 40 R21 starting at: $467.19. Tires in stock: 4. Available brands: 1 with 1 models. All season: 1. Summer: 3. Run flat: 4. 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!