Search new + high quality used tires online. Size 285 40 R21 starting at: $83.64. Tires in stock: 74. Available brands: 6 with 18 models. All season: 49. Winter: 5. Summer: 20.. 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!