How does tired tread get “worn” and why do they often wear unevenly, thus the need for rotation?

Question

How does tired tread get “worn” and why do they often wear unevenly, thus the need for rotation?

In: 1

Answer 1

Tire wear is caused by friction with the road rubbing rubber off the tires as you drive. Tires wear unevenly because the drive wheels will wear more quickly than the non drive wheels