Search new + high quality used 285 45 ZR21 Pirelli tires online, starting at: $44.59. 285 45ZR21 Pirelli models in stock: 4. All season: 9. Summer: 6.. 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!