Years back I had a set of "covered lug nuts" on my boat.
They were regular steel open end lug nuts with a thin metal jacket on
them. The jacket was closed ended and made them appear to be
stainless or chrome "acorn nuts".
I had a 6 point spark plug socket that -just- fit them perfectly.
I always used it but eventually the metal jacket got deformed and loose
I don't recall it ever preventing me from properly tightening the internal
lug nut tho.....
Fast forward to my present trailer. It came from the factory with
a bag of cheezy white plastic lug nut covers. These also slipped on the
plain open ended steel lug nut. They were ugly but for some stupid
reason I put them on anyway.
After a few months I wanted to remove a wheel and it was
REALLY hard to get them off
I used screw drivers, channel lock pliers and other tools trying to pull those
plastic nut covers off.
As I was struggling (at home in the shade with a cold one nearby) I thought
how mad I would have been if I was sitting on the side of the road
with traffic whizzing by struggling to get those plastic caps off!
I tossed them in the garbage!!