the over and under-inflation wear isn’t as much of an issue these days as it used to be. In the old days of bias-ply tires, that was definitely the case. You could have a low tire and hardly be able to tell, because the stiff sidewalls would hardly sag. Their flex point was down the middle of the tread. Radial tire construction puts the flex point in the sidewalls, which doesn’t distort the tread as much, plus gives a much smoother ride…