I just did some in-depth research (8 google searches) and couldn't find an answer, so I'll ask here: does anyone know what the legal restrictions are on what seats I can put in a car that I'm sitting in with a seatbelt while driving? I've got my Rialta and the captain's chairs are bulky and barely fit in the space well. I can't really lean back much in them when I turn them around to face into the cabin area. They're awkward and cramped.
What I would love is to just mount Aerons on those two and use those.
I mean, Aerons are heavy-duty seats that can take a beating. I wouldn't worry about them breaking in a crash any more than these junky old things already mounted there, especially if I mounted them very solidly (i.e. got custom-welded attachments.) Plus they're very comfortable for long-term sitting because people routinely sit in them for hours every day. They'd be much better for lumbar support and whatnot on road trips than the existing seats.
Plus they aren't that bulky, nowhere near the existing seats, and I could spin 'em around and then have two sweet Aerons to recline in when watching movies or eating or whatever.
But when I mentioned the idea to a car-savvy friend he looked at me like I had just suggested filling the gas tank up with Kool-Aid to save money. He insisted it was certainly illegal. But now I'm wondering, because it would be awesome if I could find a way to get away with it.