I may purchase new tires for my 1948 two ton. What are the advantages of either? I am going to start pricing today, so if one is cheaper by a lot, that might be a deciding factor, but I would have to know what I am giving up or getting an advantage if I go smaller or bigger?

A day without laughter is a day wasted- Charlie Chaplin
When wrestling a grizzly bear, you have to keep at it until the bear gets tired, not when you get tired.
1948 Chevy 2-Ton