I've got an '01 with the rear air suspension only, but I absolutely love it. I have replaced both the air springs in the rear myself. The rear ones are cheap and easy to do, I think the cost was $220 shipped for both and took a half hour to do at home. Compressor is still doing fine and it has been at least 8k miles since I swapped them. So I would say just replace with the arnotts and then call it good. My local indy says the arnotts are way better then the bmw oem air springs. Just my .02