Search new + high quality used tires online. Size 265 40 ZR21 starting at: $30.09. Tires in stock: 148. Available brands: 12 with 19 models. All season: 23. Summer: 125.. 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!