Question

1. the tread of a tire is worn in the center and not on the outer shoulders. technician a says this is caused by an improper wheel alignment angle. technician b says this is caused by overinflating the tire. who is correct?

technician a
technician b
both a and b
neither a or b

Explanation:

Over - inflating a tire causes the center of the tread to wear more quickly as the center of the tire makes more contact with the road surface than the outer shoulders. Improper wheel alignment angle typically causes uneven wear on the edges or other irregular wear patterns rather than just center - only wear.

Answer:

B. Technician B