Wonder if weight is the issue.
Usually trailing arm bearings starting to fail then take the torsion bar with it.
Think the designs changed on different shapes
Yes, M49/M59 had independent trailing arms with torsion bar springs. They were the best for ride and handling. B9 & K9 have a torsion beam with coil springs.
@gbj_tester started
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Wonder if weight is the issue.
Usually trailing arm bearings starting to fail then take the torsion bar with it.
Think the designs changed on different shapes