I just replaced two sets of wheel bearings after 10,000 miles on my Keystone Alpine, 2012. I had about 6000 miles on it before my last trip and while preparing for that trip I checked all wheels. I ...
The races were not set/bottomed out in the hub when replaced.
I just now replaced them so if what you say is true, than they were not set at factory when installed. Thus the reason I went to a truck mechanic not an RV dealer.