How to tell if your wheel bearings are bad.

[navy80to04]

I took all 6 hubs off of my RV and it looks like the bearings have spun on the spindle. I have very slight galling On spindles and brown heat marks on bearing were it touches the spindle.
On the outer bearings and 2 of the inner bearings too. Nuts were at the right adjustment And grease was black. No seals were bad. Only grease on outside of 2 rims. So grease got hot and came out around dustcap on 2 wheels.
Replace all 12 bearings and races? and of course all the seals.

[Dog_Folks]

The bearings having spun on the spindle would concern me.

I would be concerned that the present bearings are a little large in diameter and thus the spinning.

Don't use the old ones to get new ones. Make sure you get the right ones. The axle maker or the RV maker can help.

[Ron3rd]

Yes, replace all bearings, races, and seals.