I believe the lifting tags were very expensive to produce and you typically only saw them on high end coaches. It was pretty cool to see on passing through a campground with the tag lifted off of the ground.
Newmar first offered a tag that took the pressure off the axle/tires by deflating the tag air bags. A couple of years ago, they added the steerable tag, which also releases the pressure on the tag axle. Between the two, they shorten the turning radius by about 13%.
It's also pretty cool to watch the steerable tag at low speeds. When you look in the mirror, you see one wheel turning behind the duals.
Don & Mary
2019 Newmar Dutch Star 4018
2019 Ford Raptor