That is odd. I never seen such a failure before.
It is a reflection of how badly the house is punished when being driven.
It is critical that everyone should weigh their rig during their trips and adjust the tire pressure accordingly. Too little air is bad for obvious reasons, but too much air makes for an exceptionally rough ride which wreaks havoc on the house and everything attached to it. Too little or too much air in the tires also makes "handling/driving" the rig worse.
People with short motorhomes often have the opportunity to soften the ride up front as I learned with our rig. CLICK HERE
to learn more.