Joe, using a heat gun, all bearing hubs have been with 5 degrees of each other. We have not taken any long trips since we purchased it in July. The hubs lately, with ambient temps in the 80's were around 135 coming back from a local state park. I decided to be cautious and replace all of them as I don't know a great deal about the history of this trailer and don't want to run them to failure.
Rick
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