Hi! We own a 2018 Vibe 258RKS and while we have not repacked our wheel bearings yet, that's our plan for this coming winter. I have scoured the internet, YouTube especially, and found a wealth of knowledge about almost anything you want to do to your TT.
https://www.forestriverforums.com/fo...ngs-59398.html
This link has a lot of information on repacking wheel bearings. Hope this helps and happy camping!