I’m ride with a group that has a few who like to “air down” when we get to the gravel.
Our paved road ride to that point is maybe 6-7 miles and we don’t really go that fast. They also never air back up on the way home, which usually has longer stretches of paved riding due to the route we take. Also no one ever has a gauge - it’s just “psssst pssst psssst” at the last stoplight before the dirt and then we’re off.
I always worry that I’ll let too much out and then smash a wheel on a rock/root.