largest tire on 14" rally wheels

roccodart440 said
Why would there be an issue? I don't understand the specifying the rim width or the height of the rim?

Each width of rim has a maximum width tire that should be mounted on it. Majority of tire manufacturers suggest a 225 width tire is the widest to put on a 6" rim.

In an extreme case, imagine trying to mount a 275 width tire on a 4.5" rim!