John
Noticed another post you had made which I copied and pasted below. My guess is maybe something in the suspension shifted or broke.
(Not sure if this would be an issue with the 5th-wheelers, but we had an incident on our way to Arizona two weeks ago going through a construction zone on the highway . . .
The road was really rough, and even at a reduced speed, we hit a huge bump and rocked the truck and trailer violently!
We heard a loud sound (can't describe the sound . . . but it wasn't good) . . . and when we pulled over at the next gas stop and I inspected the tires, I found that the bottom of the slideout bottomed out on the tires and ripped a gouge all the way around one of the tires, and later noticed it did the same on one of the other tires, but not as bad.
At first I thought I was about to join the BlowMax Club, until I discovered the tire marks on the trailer itself!)