I run 245/60/15 on my ‘71 no issues with 15X7 rally’s, they clear everything fine. IIRC, the 245/60/15 is very close to the G/60/15 bias ply that was optional.
I ordered a set of the WV 57 series wheels from Summit a couple of weeks ago. They were a stock item so they arrived at my shipping depot in three days. When I got them home and opened the boxes, I was shocked at the poor quality of these wheels. The chrome is awful, and weld splatter everywhere on the backside of the rim. Needless to say, they went right back to summit.
Wheel Vintiques was sold to Coker Tire. Their chrome quality was slipping lately. I bought mine probably 20 years ago, and they still look as good as the day I bought them.