Past 2 weeks a demolition contractor is taking down half of the old 1970's buildings at the company i work, and i got 3 heavy I beams for 1/3 of the scrap price (the excavator operator asked me 35 Euro, for a ton of steel which is 10 eurocents per kg, last month)
With the 2.5 ton tandem trailer i bought last saturday, i took them home after work. I just had one little problem: I reckoned the beams were 5 meter, but they were 6: When putting them out 1.10 meter in front and 1.4 meter in the rear, i could hold them onto my 3.5 meter tandem. However i was off balance, no weight on the towbar.
However i was within the tow rating of my car.
I headed towards the highway but turned back to find a smaller road: Meanwhile i stopped at a gas station, to relief allmost all pressure from the front axle wheels, and inflate the rears to 4 bar. This helped a little.
I turned out in front of the highway anyway, so i took the highway and things got tricky at 80 km/h so i kept steady at 70 km/h, letting angry truckers pass me. I once before turned over an improperly balanced trailer that went swaying, so i wont take any chances and slowed down.
The 1 hour drive home, took me 1.5 hours but safety comes at a price.
Last year when picking up my 3011, i used a 6 meter 3.5 ton tandem, which weighed about 700kg empty, plus a 1700 kg trailer. Thats 2400 kg or 150% of the tow rating.
That was a very easy drive at a steady 115 km/h with no sway whatsoever.
Properly balanced load, and preferrably a long towbar, is more important than the actual number. at 75% tow rating you can work hard to keep things on the road, and at 150% you can go easy.
You are within the tow rating of your car and trailer, no lawyer can get ahold of that. Your car and trailer have an engineered margin for rough driving or poor roods, or poor vehicle maintenance.
IF you properly balance your load and be easy on your equipment, nothing will happen.