So far from this thread I have gleaned that a narrower axle will tow better than a wider axle, if the tongue length is the same for both and they are both carrying the same load and with the same tongue weight and same percentage of weight forward of the axle.

So, it sounds like the wider the axle, the longer the tongue you need to maintain the same towing stability, as far as tracking straight behind the tow vehicle.

AND, it also sounds like you are better off with a narrower axle because it is easier on your bearings if most of the weight is distributed to the outside of the wheels rather between the wheels and directly over the axle.

Am I getting this image correctly? This is really interesting stuff .