Tongue weight in Europe is around 7%

I once had a trailer that in theory could have been a great match for a Chevrolet Tahoe of the 2003-2004 era. The Tahoe was a horrible tow vehicle and the trailer was, despite its apparent long lines in front of the twin axles, too light in the front. Granted, this gives credence to the notion that a trailer should be front heavy, but this thing was horribibble. I mean, horribbibbibble! It was a poorly engineered trailer from a weight distribution standpoint. It had a very heavy rear end despite the very large distance in front of the axles to the coupler and depended heavily upon the RV owner to load it heavily at the tongue with extra propane tanks to achieve good balance. This weight distribution balance should have designed in from the start from the axles forward and rear.
By appearance it looked front heavy and front long in front of the axles, but by the scale it was tongue light even with a full tank of water. Of course, as you might have guessed, the spare tire was hung off the rear bumper.