Search new + high quality used tires online. Size 265 40 ZR21 starting at: $27.16. Tires in stock: 113. Available brands: 9 with 17 models. All season: 18. Summer: 95.. 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!