That's the thing though brother...mine NEVER SAGGED! The compressor was just too weak to lift the X5 when it was full of people. I don't see it as "bottomless" but I am not crazy about the air ride - not a good build for the long run. I would go with the spring conversion but there are OTHER issues with that (computer errors...buying a special module to ignore the air ride system / etc). As much as I love my 4.8, I may get tired of the maintenance sooner than later and find her a new home
