Max tire size 69 swinger

I run a 225x70 14" on the rear and a 215x70 14" on the front of a 1969 340 swinger. They are mounted on 5.5 inch wide factory steel wheels. Back in the day I had 14" crager SS 7" wide rim with a 245x60 (G60) on the rear and 14" crager SS 6" wide rim with 225x78 (F78) on the front. Car was jacked up, air shocks, shackles, shock extensions. All on the same car (69 swinger). Not necessarily safe but that's what we did in the '70s.