FYI....a 2.5" drop on a 6G is nothing. Still a finger or two gap.
I have high centered a couple times but it wasn't anything I couldn't back my car off myself. My main issue is my front bumper scraping, and now since I installed my Konis.....my subframe and frame rails hitting the ground.
I'm probably going to fab up some skid plates for the parts of my front lip that make contact with the ground, and maybe some Jeep style rock sliders for my subframe and frame rails.
But yeah, whatever possessed you to enter an auto car wash is beyond me, but even more so that you kept going when you drove your LCA up on the guide rails.