to the "general" forum
.
Seems like you are in a bit of dilemma since you fall into all three groups - Lightweight, Trailer, Toy Hauler. I'm not aware of anyone who has a "home forum" and just reads and/or posts in that one category. I think many members on here probably read most, if not all, posts that appear, regardless of which category or sub forum they are in.
Before posting, you should decide which is the most appropriate place for the post to be submitted. If you are asking a tire question, then you should place it in that forum not in the Toy Hauler section just because you happen to have a Toy Hauler.
Other than that, I don't think it makes much difference what will be your "home" forum.
Choices.... decisions.......