Recommended tire size for 14” rallye wheels on 63 Dart .

Johnny Dart said
Standard 14" small bolt steel wheels are 4.5" wide.
The 340 cars got the 14" x 5.5" steel wheels.
So inside (bead to bead) is 5.5"

My oops. I meant the question for the o.p.

(And I generally don't care for black wheels, but they look great on your orange car!)