What modern tire size to replace E70-14s?

69_340_GTS said
205/70R14 is the closest.

E70-14 were 25.7" dia and had 8" section.
205/70R14 are 25.4" dia and have a 8.2" section, at least if you buy a good tire like Michelin.
Michelin Defender

Or if he goes to a straight up 26 inch diameter tire, he'll be off the same
amount in the other direction!
LOL!

That tire isn't like a in between size tire.
LOL