I saw a truck and trailer rig at a rest stop this past weekend that I'm sure everyone would agree was large enough to haul a BX, or any other tractor that's ever been made.
It can carry 430,000 lbs and a load 22' wide.

More information
here if anyone is interested.
I looked for one of those at the local retail centers to haul my Ford 1100 but they are hard to find. Must be a mid-western thing!!! I even went ahead and got my CDL so I would be ready to go across town to my other lot when it needs mowing once or twice a month. I especially liked the idea of having eight tires on one axle in case I blew a tire hauling my 1200 pound load.
Each of us has a different set of circumstances, equipment, cargo, EXPERIENCE, and budgetary allowances. I prefer to hear the replies to this thread that come from people that have (or have had) experience doing something along the lines of what the original poster is asking about. Stretching your fingers and sticking in things that you "THINK" are the best idea for the o/p is just a waste of bandwidth and a reason for others to point out the flaws (from their point of view). Not wanting to pick on LB, but just to use his post about the one ton truck and 14k trailer (that he corrected in a later post) would be a good example of another way to go, but probably not the way 99% of us would go, and in reality, probably not something that he has actually tried, though I don't know this for certain. Basically what I am saying, is guys, seriously consider what your saying before saying it.
Another poster mentioned that all dual axle trailers have at least one axle brakes. Not true, as I have a trailer out back made by what was a reputable trailer manufacturer, that was originally spec'd and built with NO BRAKES on either axle. I purchased it used, and it works good for what I use it for, and I have considered adding heavier axles and brakes, but it hasn't become a priority, since it is too small to haul my JD2555 on. All I am trying to say is, think about what your going to say and how people are going to take it. It is hard to read into print the sarcasim (except maybe my post about the 430,000 pound machine to haul my Ford 1100) so try to put yourself in the O/P shoes and try to figure out what he wants to use it for, where he is located (hills, snow, dirt roads, interstates, rural driving, city traffic, etc)
Rant off,
David from jax