Search new + high quality used 245 40 RF21 Dunlop tires online, starting at: $155.23. 245 40RF21 Dunlop models in stock: 1. Summer: 1. Run flat: 1. 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!