I posed a similar question before. In that post I failed to mention they were,... {-6 lug by 7-1/4-).

I have tried to find interchange to no avail.

I could have some made for "too" large "retirement dollars" Not..!!

I have sought to find 60's Ford, International. No luck as they are split rim also. Leastways that is what tire shop interchange says?

I would easily change to an increse from 16, to 16.5, all the way up to 19.5 no problem. Gordo