Search new + high quality used 285 45 R21 Goodyear tires online, starting at: $89.4. 285 45R21 Goodyear models in stock: 2. Summer: 23. Run flat: 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!