I seem to be all alone with the bias ply tires.
I still stand my ground though. They (or any other tires) will dry rot off before they wear off and not that I plan on selling the bus, but if I did...just saying new tires is sufficient...not new radials.
I'm surprised thet plugged a 14 or 16 ply steel belted radial. The steel belts can cut the pug off I've heard. I've been told a plug is good enough to get you to a service station, but it should be patched there. I don't know how much truth there is to that, but it would make me think that nylon belted bias ply tires might be ok with just a plug. For the record...I prefer plugs over patches from my work at a tire shop. They seem to hold up better.