Had mine for 7 years mostly highway and now I drive a bit of gravel to the new house. The cover came apart and after contacting the company I was informed that I had to remove and reinstall the cover. This thing has a lot of parts and now that a half mile of gravel is in the future I am removing it for Al scrap. It is a lot of money to pay for something that fall out of adjustment this easily. Besides it is not water proof.