Greatest fear finally reared its ugly head

In my 50+ years of owning and using an RV my fear raised its ugly head. We left a camp ground in the Mountains of North Georgia and as I would go around really sharp curves I could see the wheels on my 5th wheel from the side and noticed that the rear wheel on the driver side was tracking different than the one in the front. When I got to the bottom of the mountain and the road was straight we had gone a few more miles and smoke started pouring from the axel assembly. I was able to pull off the road and hit the hub with the fire extinguisher. I had had disk brakes installed a couple of thousand miles ago. Luckily a passerby stopped and directed me to an rv place a couple of miles down the road. I was able to limp into their lot. After pulling the tire it was determined that when the installer had installed the new bearings he had not tighted the nut enough and the bearings had wobbled on the spindle. It got so hot it melted the plastic dust cap which is what caused all the smoke. Luckily it was in the day light, had it been dark who knows when I would have found out I had a problem. About 20 years ago I lost a wheel towing in the dark so I said no more...just day light towing. We had to leave our camper until the new parts come in. The longest 11 hour drive I ever made having to leave our home on the road in some one else's care.....