I'm reasonably sure that my car in its original configuration did not have this rubber. Perhaps it was fitted to the 4/4s because the lowering blocks tended to allow a metal to metal contact on the hoop and/or the underside of the tool tray. Undoubtedly Roger's rubbers and a set of decent dampers are a better solution. If I recall correctly what Peter Ballard told me the Bilsteins have internal conical rubber bump stops.

Peter

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