Tire question. Just simple bottom line

abodyjoe said

i took it as ill get the biggest 14" tire in the rear that i can find and match brand and height for the front. not necessarily the exact size.

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He asked for "max size". Nobody could correctly answer that without more info. Which it looks like o.p. can't be bothered to give. He wants K.I.S.S.
Edit: "max" what? Height? Width? Both? Same size on both ends?