E70 Rear Air Strut problem
 

i do not have air suspension but i hear they have these problems pretty common.
they actually make airsuspension delete kits so that you can revert to a no-service spring.
BMW x5 x6 E70 E71 E72 Rear Suspension Air Bag to Coil Spring Conversion Kit | eBay

but it seems new airbags are cheaper
Rear Air Spring Left LH or Right RH for 07 12 BMW x5 E70 Sport Suspension | eBay

Rear Air Spring Bag LRRR for 07 11 BMW x5 E70 with Standard Suspension | eBay

BMW x5 E70 x6 E71 E72 Air Ride Suspension Rear Air Spring Bag Assembly Pair | eBay

And some are praying for rear air suspension :yikes:
I will gladly provide coil springs and buy someone's removed air suspension ;)

i was just wondering what would be needed for airsuspension.
besides needign the compressor i wonder what other modules and coding is needed

There is thread from a few months ago.Sensors,air hoses,acumulators,control module,coding,etc...

I just bought mine from getbmwparts. Did the switch in about an hour and that is with a break for a cup of coffee between left and right. :-) There are good threads and some video as well to show how it is done.

I would do both sides now, 90k is respectable for a set of bags.

one of your bags is bad. looks like driver side.
there are at least two write ups on how to replace air spring (one by me).

but certainly, you could go coil over or put it on bags.

I know this is an old thread, but if you are still interested, I will sale you mines.