Airplane tires are also regularly re-treaded and it's not viewed as a negative or "cheapskate" action in any way.
For road car usage, I'd be more concerned about dry rot and aging tire issues from age than anything else. New car tires are cheap. We drive about 5-6K miles per year per car. We change tires based on calendar age about as much as treadwear.
For road car usage, I'd be more concerned about dry rot and aging tire issues from age than anything else. New car tires are cheap. We drive about 5-6K miles per year per car. We change tires based on calendar age about as much as treadwear.