7.00R15LT work and look great on my 58, on slightly newer rims [that I think are 6"] - as Fred sez, wider tires can be a problem with rubbing the drag link, been there

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics