What causes feathered edges on a tire?

Feathered edges on a tire are primarily caused by an improper toe angle. When the toe angle is misaligned, it means that the tires are either angled inward or outward relative to the centerline of the vehicle when viewed from above. This misalignment causes uneven wear patterns on the tread, resulting in one side of the edge being worn more than the other. As the tire rolls, the tread makes contact with the road surface in a way that leads to a distinctive “feathered” appearance, where the edges of the tread take on a pointed shape rather than a flat one.

This type of wear can lead to handling problems, reduced tire life, and can affect the overall safety of the vehicle. Proper alignment, particularly of the toe angle, is critical for ensuring even tire wear and maintaining optimal performance. Understanding this relationship allows mechanics to diagnose and correct alignment issues effectively, ensuring the longevity of the tires and the safety of the vehicle.