I have broken rear coil springs and the original Sachs shocks are long overdue on my 2005 325 with 124,000 miles non-sport suspension. I typically shop FCP euro and they used to have a rear suspension package with suplex coils which seemed to be what everyone bought? They no longer carry suplex...
I have the front struts with the top hats and springs from my M3.
These have about 50k on them and functioned perfectly when I took them off the car. The reason they were taken off was b/c I installed coils.
Looking for a quick sale. $45 for the pair. Buyer pays shipping and PayPal fees.