i have found with my maybe few years of driving to some, but lots of miles also compared to some that most important thing to towing ANYTHING be it a 4x6 trailer with a washing machine on it to a 28ft tt behind a jeep liberty is experience, just like any other type of driving.
i have towed with my fj a diesel toro dingo with attachments, which pretty much met my trailers 3500 cap, with the trailer weight, and i was near my limit of 5k lbs... with that said, it towed just fine, even without trailer brakes on my single axle trailer, even with 200 lbs of shit in the back.
2 wheel trailers arent necessarily worthless, just they are only as good as they can be for the price.
currently someone i know has purchased a liberty, 2010, 3.7v6.... he said it is rated at over 6k lbs, my gfs liberty is the same drivetrain, and it cant get outta its own way, yet my fj with wayyy more power would run the gfs liberty down and do circles around it...
so ratings are all over the board, some are capable of higher some are not capable of the actual ratings...
but it all comes to experience. how many of us have seen the pickups with a pop up swaying left to right all over the place, or a trailer full of just shit swaying, yet when you see someone who you can tell camps, and tows and knows what they are doing towing a 30ft in wind and doing just fine...
just like when it snows, peeps will bitch all over that whatever they own is useless in the winter, for example my gfs liberty.... she is afraid to go out in snow, she hit a tree once and did 4k worth of damage.... i can drive her liberty all over hell in 2wd, whereas she has it in awd all winter...
is it the vehicles fault, or can she just not drive worth a shit in winter cause she has a lack of experience...
now is she any more unsafe on the road than the 17 yr old daughter of a coworker that bounced off a guardrail into a tree last month with 2 inches on the road in a front wheel drive car...
experience experience experience.
if ever in life you are doing something that you can not handle, do not do it.
if you cant handle doing over the posted speed limit dont do it...
just cause the speed limit is 65, does that mean that others cant handle doing 110...
its a guideline. otherwise our vehicles would all be limited to 75.
one of the guys at my work who doesn't normally do deliveries said the trailer didnt seem like it was braking right....
no one else noticed.
its behind a 3/4 or 1 ton ford 4x4, possibly a dually depending on what truck is there, as it turns out 3/4 brakes had teh wires ripped right out, and the one brake that was connected the actual magnet was toast...
so, the travel trailer that has 1k miles on it, and is regularly checked and in good shape being towed by a truck vs a trailer that may be loaded to 15k lbs of equipment that has defective brakes... hmmm.
you wouldnt know the difference if either hit you as you pull in front of it.