hmmm funny thing about the old penny trick to show tire tread wear:
the idea is if you put lincoln in head first. if you see the very top of his head or space above his head then the tires need changing (according the the rule). if his head is at least somewhat submerged in the tire tread, you're still good.
what you have taken a picture of is a tire with a penny for reference that it is in fact not a 1cm diameter rim size by comparison