I wish they had "skid plates" under my entire motorhome. In June, I blew an inner dually tire and flying rubber took out some of my wiring harness and caused the gas fuel filler pipe to move backwards an inch, breaking off the gas cap. Truck service place fixed fuel filler, found a new gas cap, and patched and replaced the wiring harness back up to where it should have been. Cost was $200 for that, not counting the cost of a new tire.
Then in July, a big dump truck in the next lane on the freeway, but about 500 feet ahead of me blew a tire and the entire tread rolled into my lane. (I was in center lane going about 65 mph.) I braked but was unable to swerve, so I drove over it, with the result that it bent my power steps and damaged the motor. That little incident meant i needed new stairs and to have them installed for a total of $900.
Neither accident was my fault, but I am much more aware of things on the highway than I was. There is a tremendous amount of junk that can cause all sorts of damage to any vehicles, but motorhomes and even trailers have a lot of important stuff underneath them that can be damaged easily.