15 x 7s, what size would you run on a 68 four door dart ?

Late to this party for sure. My 66 Valiant is running 215/65-15 on the front, 245/60-15 on the rear with no issues at all. Wheel are Wheel Vintique 63's 15x7 rear, 15x6 front.

My 69 Dart ran an identical setup again with no issues.