VABlue
Platinum Member
They probably are sealed, but why not be safe? Pull the tires and inspect hubs and axel parts as best you can. If any moisture got into the bearings it could displace the grease and allow the bearings to operate without lubrication. If any particals (dirt, stone) gets in the bearing it could screw up the works, also. These would be extreme cases, but it's worth taking a look-sy after getting into that amount of muck.
