Polyurethane Bushings BMW Z4 E85, E86

The Z4 E85 and E86 share their front arms and rear subframe with the E46 3 Series, so many bush positions are common. When one does not appear under Z4, look under E46. The bushes are chosen by mounting position, not by assembly: a single arm usually has two different bushes.

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What you gain and what you give up moving from rubber to polyurethane is explained on the polyurethane bushes page.