You have hub centered wheels commonly referred to as "Motor Wheels" (the original manufacturer).
This kind of wheel from back then also came with 6 lug bolt pattern in different applications.

Not sure I've seen any 22.5" (for tubeless tire) motor wheels with 5 lugs, but I have seen a few and have one with 6 lugs, see picture.
https://photos.app.goo.gl/258xVFja7ikaeJYF3
...Which is of no help to you except the faint hope that you might one day find 5 lug 22.5" Motor Wheels, if they exist.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-