5k lbs on the A4LD wasnt nice
i wouldnt even think about towing a trailer without a brake controller not a heavy one anyway.
------------you actually thought you would get outa 3rd? pulling, even with your 9000lb thought of a tow rating, you were at what you thought to be your max. Lets think about this, even an f350 at its tow capacity, will be strained and most likely will have the same result, just a lot more weight.
---------I used to be in a fire-wood business. We built a brand new 1 ton Chevy Pickup with a 400 small block engine.
44 tires, 4.56 gears, 500+ HP with cam, headers, manifold, carb, head work, etc., transmission full B&M manual shift kit (T-400) plus huge RV cooler.
We were pulling a weighed 25,000# in a ball hitch (2 5/8 ball) 3 axle trailer (2 axles w/brakes) out of the woods, through the mud, and down the freeway at speeds of 80+. We didn't even think anything of it.
Friends were pulling more than that with goose-neck trailers for grain, cattle, etc. Its all how you set up the truck, and how the driver drives it.
----------I had a typo on the ball size -- everything else is as I said.
And, yes... we had a pair...
Call it young, dumb, and full of... Anyway, we did it all the time.
Full cord of wet oak firewood = 7500#
3 full cords of wood (4 x 4 x 8 feet) on a 3 axle trailer = weight of trailer
You do the math...
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I don't doubt you did it I just said that it took some BA!!s to do it going 80mph.