Search new + high quality used 255 40 R21 Pirelli tires online, starting at: $37.91. 255 40R21 Pirelli models in stock: 12. All season: 6. Winter: 19. Summer: 58.. 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!