I had Contis before I started Schwalbes. The Contis always cracked, the last one bought around 2009 still went 6,500 miles or so. Before that, nothing lasted over 3 years before rotting usually at the corners of tread. So the last 5 years I have been buying only Schwalbe Marathon Plusses. None are finished yet, going 5 to 8,000 miles with still plenty life yet. 2 flats in the bunch, none on a 4,200 mile tour in Vietnam on 290 lb load. I have one plain marathon sitting unused 2 years, so no idea how it is.

In my experience, a tire lasted a mile per 1 cent. The Schwalbes far outlast that, absoluetly bullet proof.