At one time long long ago I figured out that those two odd pieces were for the spare.
I forgot ! The one that looks like a loop is quite an interesting design.
Anyway I just hit 105K miles and thought it was time for the every two year spare air up and check and cable lube.
Praying that I never have to change a tire, especially with my anti-theft rod and lock. Takes a day and a half of fiddling just to get the crank down stick in the right place.
Did notice some little black dot pits in the show side of the spare mag wheel. Some kind of corrosion pits. Like a swarm of tiny black ants, and they do not scrub out.