I think I can add a little fuel to the fire here.
I think that the I beam is a stronger product then the tube. If used in the proper place. Trailers have the weight bearing down, so using an I beam gives a lot of strength, allowing for flex and not as prone to kinking or buckling as tube. As far as the flex argument, a rig has to flex to a certain degree, other wise something is going to break. The part about tube rusting from the inside, I'm not sure I can buy into that one
Thor Forums
