I think they only came in a 37 12.5 17. Not near them right now. I know they are 37" and I know the rims are 17" so I assumee they are still 12.5" wide.
They kinda look like the original GI Joe cut krawlers. They had the original radial carcass and sticky tread. They don't have a "not for highway use" label on them. I have a set in 37 that look identical.