Just replacing all rear links with new lemforder bushings along with new subframe bushings, you will prolly be blown away how your 201 feels, The difference is an african winter night and a california spring day.

The 2 major rear links are the pushing and camber link, the pushing link literally takes the entire forward thrust of the car when it moves - using poly there can help for longevity.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)