Bearing Temps

I measured the temp of the hubs with an IR monitor when we pulled in after pulling 350miles today. Both front trailer tire hubs were ~105degF, while both rear tire hubs were 125-130degF. I suspect it's loading as there's 50gal of water ~5' aft of the rear axle. Should I be concerned for the bearings? I don't think I overtightened them, bet didn't expect to see that much temp variance. This is the first time I've checked temps so I don't have a reference.

Thanks in advance for any comments.
Ron

I would make sure the hotter axle brakes are not dragging; that creates extra heat. I have never seen that much difference in axle temps at the bearings so I guess I would look to see if there is anything else that could be causing the heat difference. 130 is a little warm if you did not do any braking prior, but certainly not excessive. 105 is just about perfect. On a 85 degree day mine typically run around 115. In some ways you are in the ballpark, one a little lower and one a little higher. It could be loading and it could be brakes dragging a little. It is very easy to check to see if bearings are too tight and it is also easy to make sure the brakes are not dragging. If both are correct, I would not worry about it unless the temps start to go substantially up.