Ya know my simulators do the same thing, they creak and snap when going slow. I thought someone had put rocks or something in them so I jacked them up and spun them real hard and they made no noise :h.
I put them down and drove them and the sound came back so I had a friend put his hand on them while moving real slow and he could feel them flexing, I guess it is the nature of the beast. I will live with it, at least when I'm going slow I can't sneak up on anyone, that may be a good thing..
I like the looks of the shiny wheels on my RV, so it doesn't look like a Clamett Mobile :B, HEY NO OFFENCE to others that like the look of an off road vehicle. Just a personal preference.
Don't even get it started on that Rock My RV TV fiasco