As you would expect the bigger forums are U.S. based. I have dipped my toe in this one a few times, mainly for information.
https://www.hdforums.com/forum/touring-models-11/
It can get a bit feisty on there....there are different levels, depending on how aggressive you like your banter. If you ask about which oil or tyres (tires)
to buy then expect a similar response to the one you would receive from some on here. They also tend to have zero tolerance for pointed questions about their gun laws (ask me how I know!) or any post that is not "Team America!" It is however a mine of mostly useful technical information on anything H-D....if you can imagine any outlandish mod to a Harley, someone on there will have done it.