I wasn't privy to the discussion on Rural Delivery wheels, and there aren't any 18" wheels shown in the 1948/56 parts catalog for F1/F100's.

But...there is this one:

B6C-1015-A .. Wheel / 17.5" x 5.25" / 5 lug / 5.50" bolt circle / Use with tubeless tires.

Application: 1956/66 F100.

 

No, of course the rural delivery wheels wouldn't be included in Ford material '48 and later because they were a pre-war item. I was simply drawing a parallel. Thought you were in that discussion, but guess not.

 

Bill and Stu, I spot sandblasted the wheel to find markings. It is stamped with the ford oval on the outer surface under the hubcap area and it has the kelsey hayes markings and the size at 15 x 5 1/2 on the rim.

 

Yeah, that's one of my frustations with K-H wheels. They don't ever seem to have part numbers on them. At least you know what you've got. Now try to match it .

 

There are NO absolutes when it comes to part numbers and Ford and all it's affiliates around the world were by far the worst.
If a fly farted Ol Henery wrote a patent on it, engineering gave it a drawing number, marketing gave it a part number and sold it to Borg-Warner who wrote the number backwards and FMC put it books to confuse the hell out of Bill.

 

welp i'll chime in now . just drug that half a 52 ford truck/ trailer home , i'll put up pics later , but some of you guys are gonna cry ! it's actually that good . but its got a set of really narrow , 15 inch 5 on 5 1/2 bolt rims with almost no offset on it . im gonna keep em as they , the centers are a perfect match for the ford rims i got off the 55 parts truck that are reversed and have some of the chrome plating left .i will look a little closer tommorrow and see if i can find some markings , and they are innies .