Search new + high quality used tires online. Size 265 40 ZR21 starting at: $35.61. Tires in stock: 156. Available brands: 16 with 29 models. All season: 37. Summer: 119.. 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!