The first set lasted 5 years and 60,000 kilometers before I decided to upgrade. It has far too many obvious benefits for a cheap tire, especially when compared to its "peers." I believe the prefix Pirelli is included because the tires are so exceptional. I can attest that the tires' performance is consistent even after moderate use. The new ones are well-balanced, and I was satisfied with both the price and the extra guarantee provided by the manufacturer. This wasn't the case the last time I borrowed a kit; definitely, the quality of this brand is improving.