Original Tire Size for 59?

[Tod59]

Hey guys- three quick questions about tire size on my 59' 1/2 ton fleetside with 5.5 inch x 15 inch rims:

#1. What size tire originally came from the factory on this truck? (I assume it was bias-ply?)

#2. If I buy a set of Coker Classic Nostalgia Radial tires for my truck (see link below), will the 225 series be narrow enough to avoid rubbing the steering arm?

#3. For a "Dairy Queen" ice cream run and "only drive when it's nice outside weekend fun truck", will bias-ply tires suit my needs (very little highway driving?

Previous owner installed 235 series tires on the truck and I noticed a "rub" line on the inside of the drivers tire where it had been rubbing the steering link. I like the height of the 225 to fill up the front fender-well of my truck. My truck is all stock by the way.

http://www.summitracing.com/parts/cok-597020

Thanks
Tod