Search new + high quality used tires online. Size 265 40 ZR21 starting at: $48.49. Tires in stock: 96. Available brands: 11 with 18 models. All season: 10. Summer: 86.. 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!