Wes Tausend wrote:
...I know that it is a common belief that tires worn on both the outer edges are always always caused by under-inflation. I would like to question that......
And you are right to do so.
My experience is that steer tires wear on the shoulders and drive tires wear in the center and that this phenomenon is much stronger than over/under inflation.
Besides, most tire manufacturers are doing what they can to reduce uneven wear - even uneven wear caused by over/under inflation and the steer/drive phenomenon I mentioned above.