Height without the roof rails is listed as 78”. Rivian has the roof rails listed as 4.24”. I just measured My Yakama ski racks they add 5” and another ~2” above that loaded with marker Xcell alpine bindings on Volkl racetiger a with a piston plate. So looking at 78+4.25+5 ~90.25” and +another 2” to ~92” loaded with alpine skis. You can lower the Rivian suspension 2” below above. But still with it in low looking at ~80” with the OEM crossbars and no ski rack.
A word of caution with that. My brother has a GC trailhawk with air. He could fit under his garage door with his skinny warrior on with it in low. That said he was in a hurry one time and didn’t lower it, trashed a cargo basket, roof rails, crossbars, and his sunroof.
I have a similar situation with my LX570. With Yakama round bars I can swing the racks down (picture) and make it in/out of my garage with the rack on. Can’t do it with skis on though. I have to load the skis outside the garage then I put my trash can in the middle so I don’t just drive in. I also use this card as a reminder.
View attachment 6428
View attachment 6429