Light "metal rubbing" sound when towing

[Hattem]

I was putting our North Trail 30RLSS away for the season and my wife noted a light metal rubbing sound by the wheels when I was backing up. Since I never get the opportunity to hear this, and it is obviously impossible to hear when we are driving, I am wondering if this is normal? I have about 10,000 miles on the unit, so I question whether it could be brakes or bearings. Any ideas as to what I should get checked?

 

[hoefler]

Brake magnets dragging on the inner face of the drum, perfectly normal. It is how they work, the magnet sits very close if not touching the drum, when power is applied, the magnet will start dragging the drum stronger, pulling the lever it is mounted on side ways, thus applying the brakes. Thats it in a nut shell.

 

[Hattem]

Thanks for the information and quick reply. Greatly appreciated.