1969 dart wheel and tire size?

There is a lot of variation between darts. I had a 68 dart conv with factory 8 3/4 and ran the equivalent of 235 (g70) on later 14" rally's. I moved those same rims to our 67 dart conv (7 1/4)and I had wheel lip rubbing. Both cars were bought new by family and were original .
The 67 came with 690 13s with the 273- now that was granny tires. Appropriate tho because my mother bought it new.
I was always amazed at how much side to side swing you could create on a stock sprung dart when sitting still and that has to be accounted for when looking at tire clearance.