It lengthens the tread life by allowing the tread design, the compound and the decreased pressure to work together. The durable, wear-resistant tire compound lowers the tread wear rate. The reduced rolling resistance eases the driving pressure off the tread area, which along with the evenly distributed forces of acceleration, cornering and braking, avoids the formation of irregular tread wear on the tire's surface. The longer lasting even tread wear and the slower tread wear rate lengthen the tread life and the tire's usability significantly.