If you find that your shoes are wearing out unevenly, it may be because of an imbalanced posture or movement pattern like how you walk, run or stand.
It all depends on the area with the greatest pressure. That is the area that will have the most wear. When the body is in mid-line, your weight should be evenly balanced across your feet.
If you tend to put your weight on one foot when you stand, you may notice that your shoe on that particular foot wears out faster than the other.
This asymmetry usually results from an imbalance with muscle strength, flattened or high arches, joint mobility, and posture when walking. The body is always trying to stay in mid-line. When an imbalance occurs, other areas of the body begin to compensate.