Tires can get damaged internally and the only real way to tell is to dismount them from the rim. If there is internal damage they can potentially explode while being filled with air.

I see a lot of people filling up their tires while sitting straight infront of them and if they do explode it explodes straight outward. My tip is to connect the air gauge and then stand of to the side while filling, just in case.

This looks pretty good. I've been using it all morning now. Does upvoting not work correctly yet, or am I doing something wrong?

Canadian here!