Here's a decent link that tells how to read "P-metric" and "Euro-metric" (who knew they were different? :1poke: ) tire sizes and you can use their formulas (formulae?) to figure out what a metric tire size is in good old Mercury inches: http://www.tiresafety.com/size_class/size_nav.htm
You really should have been running a 7" wide wheel for those G-60-14s. I have a set on 14x7" painted magnums on BetaCat as we speak (on the rear). Go with a narrower rim and you'll be bowing the tread and making the middle wear out or have to run less-than-optimum tire pressure to get them to wear right.
Yeah, Cougrcj, I know that now. But when you're young and stupid you do stupid things. Even back then (77) "wider was better" - for rear tires anyway. We weren't sure what would fit so we measured tires on the rack until we found the widest that had 6" between the beads! Ignorance is bliss. Amazingly I never had any problems with wear.