Over the last 2 days I've been hearing a creaking, sometimes groaning sound coming from the rear of the car (328Ci) so I took it to my local indy shop who diagnosed the source as a cracked subframe. I have Bilstein PSSes installed and from my research on this issue some dealers will still honor a claim even with non-OEM suspension, as long as the car is well maintained and doesn't show obvious signs of abuse. I need to find a dealer in the Washington, DC area willing to look beyond this "suspension modification" and honor my repair claim. I'd like to hear from any DC area member who had the subframe issue with non-OEM suspension and their dealer fixed it. Which dealer did you go to? -- Thanks.