Air ride, rear leak question

[Monty.335i]

Hey guys, for the past couple of months I have noticed that my rear air springs have not been holding air as long as they use to. Recently, when I would park the car overnight I would find the rear end sagging in the morning but now when I park for a few hours it's sagging with the air compressor working on overtime constantly.

Im looking at buying new rear Arnott Air Spring and replacing them myself since they are priced reasonably. I wanted to see if anybody else has had this issue and also if any other recommendations for fixing this issue. BTW- Im at 80k miles

[TKR]

Same issue here starting at 80k.

Replaced with Arnotts few months ago and no sag since then.

Vide instructions:

[Monty.335i]

Thanks man, I figured the air bags were the issue.