Just put a new set of tires on my trailer and was looking at the spare to make sure it was in good shape. Like many spares it is laying flat across the front of the trailer frame, bolted to the frame. Thought I'd pull it off to make sure all was good.
To my surprise the bolt hex size was 13/16". The nut size was 7/8". My lug nuts are 3/4". I already carry a lug wrench and Cresent so I'll change out to all 3/4"
Glad I checked because if I was to have a blow out and needed to get the spare off I would have had an issue.