Time has shown that most of the factory published weights were either very very optimistic or just plain wrong. Some have postulated that there was some tax or financial incentive for builders to keep them under 1000#. I don't know if that is true, but I do know that that was usually stated to be without a refrigerator
, any equipment, etc.
Most real-life Bolers, etc. weigh in at around 1300# or more (sometimes quite a bit more). The only way to know for sure is to weigh your rig.
On the axle
rating: I wouldn't doubt that some original axles are over their ratings, but on the other hand, the axle
only supports un-sprung weight, so you would not include the weight of the axle/wheels/tires themselves, nor the tongue weight. I would think that would save around 250# or so, and so a 1250# rated axle
could support a trailer weighing
around 1500# (not recommending cutting that close; just saying because of the un-sprung weight factor).
I don't have all the abbreviations to hand right now, but GVW would probably be supposed to stand for total weight. In the case of the Boler, they seem to use the axle's weight rating for that on the sticker.
No matter what the rating is though, I would weigh the unit if there is any doubt, or if you are close to your vehicle's tow rating.