4.8is towing and rear suspension drop

[pieter4458]

I towed a medium size trailer of about 600kg with a nose weight of approx 80kg over the weekend. The day after I noticed the back of the X5 is much lower than the front (air suspension fitted) and took the car to the local BMW agent to check.

Official feedback from the dealer:

1. Nothing wrong with the suspension and only an adjustment was needed.
2. The 4.8is air suspension is not build for towing "heavy" trailers and the compressor is not designed to pump heavy loads.
3. The computer remembered the lower suspension due to the load and store it as default.
4. Suspension has been reset to a higher level and will work, but please check and come back of it drops again under load.


This sound to me as a lot of bull and a way to avoid replacement of the air pockets.

What is the correct answer?