On one hand, front tires wear faster, meaning you should put better tires to the front to guarantee even wear. (mechanics.stackexchange.com)
We look for uneven tire wear on the outside and inside of tire and make sure tread wear has not fallen below recommended levels. (firestonecompleteautocare.com)
This results in very heavy inner tire wear on the rear wheels of a car that is heavily loaded or towing. (en.wikipedia.org)