The gravel thread got me to thinking about this observation.
It's a pure fact.
Dirt/gravel roads get ruts, potholes and washboarded because the vast majority of people don't have a clue how to drive on them.
If you have ruts or potholes showing up, DON'T drive in the same ruts... Move over a bit. Avoid the mud puddles and potholes.
This is a directive I have to remind my wife of often...
I know you guys know what I'm talking about.