14″ tires and rims question

I have a 65 Valiant and I want to put on 14" standard/regular rims and full wheel covers/wheel discs...not the dog dish style.
I have found some original Chrysler 14" by 5" wide with the 5 bolt 4" bolt pattern.
I want to put on narrow whitewall radial tires on these rims and my question is, what size tire should I get?
From looking at sites like Coker Tire, it seems like a 185 series would be best but, I want to get some opinions from the knowledgeable people on this site.
Thank you
Author: Cadee