[Wally Arntzen]

When backing up to turn around I always dump the air for the tag and it allows you to turn sharper, reduce the wear on the tag tires and not damage the lateral shock that is above the tag system under the coach. When I got my coach my friend who runs a bus repair garage discovered that the shock was bad and we replaced it.
He made it clear to me that you should always dump the air when backing up if in a turning situation, making sharp turns at low speeds or when in slippery conditions and you need all of the weight on the drive tires.
Prevots do lift up but dumping the air as the Newells do is the same result.