The wear on my shoes is slightly different, I'm more on the outside of my left foot than my right.
unless they're vastly different, then this is quite normal. We're not perfectly symetrical, this is refelcted in the way we move and so you'll tend to have a slightly assymetric wear pattern.
If it's vastly different, then that might suggest you need something custom to address the assymetry. But you'd possibly know that from other problems, not just shoe wear.
