The car actually came with the optional Michellns back in 1971. Do they still make Michelins in white stripe? 225/75x15 is the original size. I thought these Vogues were kind of cool - white stripe with a gold pinstripe around it. Not a fan of the heavy tread pattern though.
https://www.ebay.com/itm/NEW-SET-OF-...5.c10#viTabs_0