I read this question on an RV Forum:
We picked up a screw in tire tread. Does anyone know if it can be safely patched, we have a 42 ft fifth wheel and I'm worried about pressure.
The tire dealer can confirm. There are limits on Size (smaller then 1/4') Location (not in shoulder or sidewall.
It looks like it might be OK for "Patch & Plug".
The tire MUST be dismounted so the interior and be inspected for damage.