Which adjustment would likely cause excessive wear on tires?

Excessively positive camber can lead to excessive wear on tires because it alters the way the tire makes contact with the road. When camber is excessively positive, it means that the top of the tire leans outward away from the vehicle. This condition causes the outside edge of the tire to make most of the contact with the road, leading to uneven wear patterns. As a result, the outer tread of the tire will wear down more quickly than the inner tread, potentially compromising the tire's performance and lifespan.

Additionally, proper camber angles and balanced toe settings contribute to even tire wear and improved handling. When these alignments are maintained correctly, the tire surface remains more uniformly in contact with the road surface, resulting in a longer lifespan and better vehicle performance. Excessive positive camber, on the other hand, disrupts this balance and can lead to premature tire failure if not addressed.