LD1
Epic Contributor
Depends on the brand. There is very minimal weight difference between 6k and 7k axles. Usually there are other factors. Like longer trailer. Most 12k dumps are 12' long. Most 14k dumps are 14' long. And sometimes you get more under floor supports, or heavier gauge floor. So the upgrade to a 14k isnt always just about payload....but about how stout the trailer is and what size.I have a 12 ft 12k trailer and when I was shopping for one I had to consider empty weight of the trailer and the weight of the load you can put in when you go to a 14k trailer the empty weight goes up so it's not like you can actually put another 2000lbs in it
I have a 7x12 suretrac 12k. It weighs 3240# empty. An upgrade to 14k also means 14' long. The majority of the weight is simply the added length. But that said....it only adds 360# of curb weight. So while you dont get a whole 2k more payload.......you get pretty close and a bigger trailer to boot.
IF comparing two identical trailers.....and the ONLY difference were a pair of 6k vs a pair of 7k axles.....I doubt the difference would even be 100#
But as with all trailers, curb weight/payload vs overall construction is a trade-off. Build a light trailer on 8k axles and you will have alot of payload.....but will it hold up? OR build a tank on a pair of 6k axles and not even be able to haul 3-ton. Its a balancing act....and I think most of the big players have it figured out. Which puts a 7x14 bumper pull right around 4k empty with a 5 ton payload capacity