It combines the tread design, the construction and the compound to increase the length of the tread life. The tread's solid shoulder ribs maintain the tire's road contact at all times, while the reinforced steel carcass stabilizes the tread elements. These features work together to prevent irregular wear formations along the tread area by evenly distributing the driving pressure on the tire's surface. The durable tire compound on the other hand is wear-resistant. It significantly slows the tread wear rate down and, together with the ensured even wear, guarantees an extended tread life.