Separation of one of the welded bungs from the unibody in an E36. The car is on its second set of OEM RTAB's.
Sorry for the poor quality. What you are seeing is where the console (carrier) for the rear trailing arm bushing bolts into the unibody. The threaded bungs that hold the carrier in can tear out over time, as seen here. Due to the poor (cell phone) video quality, you'll have to look closely.
How did you solve the problem... mine has a similar problem: bolt is snapped way into the frame...
spiff31 3 months ago