I was in the process of rotating my tires and noticed that both front tires have excessive wear on the very inner edge of the tire. It's as if something was rubbing a ~1/2 inch gouge into the inside corner of the tire... it's not a continous type wear across the tire that you'd see if the wheels were out of alignment. On one side, a steel belt is slightly visible. It's as if the tie rod ends are rubbing into the tires, but there's no evidence that there is any rubbing on the tie rods themselves, and clearance looks sufficient. I have stock wheels and tire size. Any ideas? Thanks.