Which aspect of wheel alignment affects tire wear the most?

The aspect of wheel alignment that affects tire wear the most is the toe settings. Toe refers to the angle at which the tires point in relation to the centerline of the vehicle when viewed from above. If the tires are pointed inwards (toed-in) or outwards (toed-out), it can lead to uneven tire wear.

When toe settings are misaligned, one side of the tire may wear out faster than the other, leading to premature tire replacement. This type of wear is usually characterized by feathering or scrubbing on the edges of the tires. Proper toe alignment ensures that the tires make even contact with the road, which not only prolongs tire life but also improves vehicle handling and stability.

Understanding the critical role of toe settings in tire wear can help technicians make more informed decisions during alignment procedures, thus enhancing vehicle performance and safety.