Search new + high quality used 265 40 R21 Dunlop tires online, starting at: $44.59. 265 40R21 Dunlop models in stock: 2. All season: 1. Summer: 33.. 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!