i have the same situation: i weighed everything: an the total weight of the trailer with my tractor on it is 7800 lbs: that's 800 over the 7k rating: plus my 04, z71 is only rated at pulling 7k: i do have brakes on both axles, an make sure they work before i tow the tractor: but i really drive defensively when i am pulling this setup: i would like to trade up to a heavier capacity trailer, but they want way to much money considering what i can get for my 18ft trailer: plus i would probably be back to brakes on one axle. have even considered changing out the axles to two 5 or 6k rated.
heehaw
How did you weigh the trailer, Hooked to the truck or disconnected from the truck?
If it was uncoupled then you could put the traditional 10% on the hitch and that would put just 20 Pounds over on the axles. put the whole 800 on the hitch and you would be at the trailer's capacity, not over.
The only problem is with your truck rated at 7K towing, those ratings usually allow for zero extra Pay load in truck, so your CGVW would be that 7,000 plus the empty weight of the truck. So that 800 on the tongue would be that much over on the CGVW.
At least that's how it is on my Dodge, when I did the math for mine I figured I would have to be small super model to meet their claimed CGVW ratings, never mind have any tools in the truck.
If that weight you stated of 7800 was taken already hitched to the truck then you would be over on the trailer and CGVW of the truck truck by about 1600 LBS, not just the 800LBS.
That's if they use the same system as Dodge anyway.
As far as putting 5K axles in, you wouldn't be able to legally carry any more than the 7,000 unless you could prove the frame was rated for 10,000. And most likely isn't. Though some manufacturers might just use the same frame between their 7K and 10K trailers.
I have a kinda screwy situation in the rating on my 20 footer, the title says 9,000 but that's with tongue weight already considered, so total trailer and payload is only ~8,000, but the axles by all accounts are 5K each. called the manufacturer and asked if maybe this frame was rated for the 10 K and they said no. but at least I know if I'm overweight it's not the axles that are weakest link.
It would be the frame, and the tires, when I need new tires I will get the ones rated for 5 ton trailers, taking another weak link out of the equation.
I could always reinforce the frame to put myself at ease but I doubt that would fly with DMV.
JB.