215/70R14 on 5 inch rim?

I have mounted 215/701R4 tires on my 1972 Satellite Sebring Plus factory 14 X 5 inch rims. (I know, it's a Bbody but I also have two Abodies). Doing some internet research I find the recommended rim width for that tire is between 5.5 and 7 inches. I have already made two road trips and I thought the car handled great. I plan I third trip soon. Should I have any concerns with this combo? I did read somewhere that a bigger tire on a narrower rim will better protect the rim from curb scratches, but that has nothing to do with safety/handling.Thank you.

rim width calculator:
Wheel/Rim Size Calculator - Shows acceptable rim width range for the tyre size