Right. You baked in a bunch of assumptions and decided you were more experienced and that I needed to learn something from you. Of course there is the possibility it could be knocked against something. But I had the exact same setup 4Runner and had nary a problem after 5 years of use. I do own a drill and, in fact, had to use it to enlarge the hole. The terrain I am usually on is mud or sand. I enjoy going to the Rockies and will often hit 4WD trails but I never rock crawl or cross creeks with 4 foot high banks. If I was suddenly teleported into rock garden maybe I'd have the sense to take, oh, I don't know, maybe 30 seconds and remove the nozzle. Or maybe I hit an animal on the highway and destroy a nozzle that cost $2.46. Maybe it ruins the 4 foot air hose too--that's another $8-$10. I might even have a flat tire someday. Why would I appreciate arrogance? Sorry for the rant but I don't think you were trying to help. I'll let myself out now.