how old are your tires and have ever repacked the wheel bearings, two biggest concerns of mine. I also see the TT is new but you are asking why repack if the TT is new. many of us look at it this way, building a TT is not rocket science and if they build one it usually is full of misfits or shabby build practices. if they can't build a TT with the greatest quality what makes you think they packed the bearing properly too. every new or used TT I have purchased goes in for new and over sized tires and I get the bearings repacked. found some bearings not packed perfectly
