No, we have never hit a curb other than just rubbing the side wall on the tire (barely left marks) when we parked nor hit anything hard with the axles.
When I tested the voltage with the brakes on inside the truck, I had between 10.2 - 10.6 with the brakes applied. The driver side seemed to have a higher voltage reading when the brakes or the manual over ride lever was depressed. When the brakes were off in the truck, we had no power at the wires for the magnets. Would it matter if I had the drums off while I was testing the voltage? When I got these readings, I had the drums off and took the readings at the wires inside the brake drum just before the magnet with a test probe.
The area that gets the hottest on the rim is the center. The lug nuts are probably the hottest thing to the touch and then the area around where the lug nuts tighten to.
Someone on another forum suggested that the break away switch might be causing the issue. Maybe some water or age set in (original break away switch that is 15 years old!) and is making contact when the trailer is in motion causing the brakes to engage. But wouldn't that make them equally as hot?
