Search new + high quality used 275 45 R21 Pirelli tires online, starting at: $26.89. 275 45R21 Pirelli models in stock: 19. All season: 168. Winter: 21. Summer: 34. Run flat: 1. 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!