Airmatic question - 2016 E63

I am noticing a larger gap between the top of the tire and the bottom of the wheel arch , significant ,seems like on 1 side of the vehicle the car is "lowered".
This does not always seem apparent. Sometimes both sides seem to be at the appropriate level.
Anyone else notice this ever?
Any idea what I should tell the garage to look for etc?
Many thanks.
If you had a handheld scanner like icarsoft, you can plug it in and read the ride level sensor height the car is seeing.









