https://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/55-SUSPEN-Replacing_Your_Rear_Trailing_Arm_Bushing/55-SUSPEN-Replacing_Your_Rear_Trailing_Arm_Bushing.htm
The rear trailing arm...
Type: Posts; User: PetesZ
https://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/55-SUSPEN-Replacing_Your_Rear_Trailing_Arm_Bushing/55-SUSPEN-Replacing_Your_Rear_Trailing_Arm_Bushing.htm
The rear trailing arm...
My understanding is that most of the wear is the lca.
I just looked at mine when I swapped the differential. They all seemed fine. I plan to do the lca here soon and add limiters. Have no decided...
I have not done this yet. And will be interested in the results.
I was looking at dropping the entire subframe.