The new car and truck manufactures seem to want tall rims (for gas mileage) and skinny sidewall tires that ride stiff and horrible (my generation is showing up).
What this means to me is that my 1994 truck tires are no longer "in the trend" and manufacturers follow the money, obviously, with the model of tires they produce.
My selection of available new tires for my 1994 truck have dwindled especially the ones I like.
So if you own an old truck or car (90's and older), we all will be in the same obsolescence boat eventually, at the present trend.
Future and current prices will be much higher for the decent tire. We "poor boys" will just simply have to squeal or modify our trucks to fit these hideous wheels of today.
As a general rule old (30's, 40's early 50's) stock rims that require inner tubes need to stay with inner tubes and need to be rated for the highway speeds of today.
Most Stovebolters prefer radials for the everyday ride and handling (unless originality is primary then $$$ for the new good versions of the bias ply) so you need rims made for tubeless radial tires.
In 1955 it became standard for cars to have tubeless.
In ~1965 it became standard for cars to have radials (the rims made to bead a radial).
I prefer nothing wider than 235 for my manual steering box and that works out to a 8" rim (for example).
Then it depends on if you have upgraded (or plan to upgrade) you rear axle and whether it has or will have 5 or 6 lugs (1/2 ton).
If you find a 60's, 70's and later scrapyard rims and new tires that meets you needs, the original 1955 hubcaps may not fit so you may have to add (rivet) clips to the rim.
There will be others who will come along and give you ideas on what they have and correct the errors in my above statements.
My 55 1st 1/2 ton Chevrolet (Redhead) has a Camaro rear axle with straight axle CPP front discs. 5-lug, Camaro Rallye rims with 235 R75-15 tires. https://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/1423064https://www.stovebolt.com/ubbthreads/ubbthreads.php/topics/1427396/1.htmlhttps://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/1426489