Thread: Tracking a floorboard vibration at ~40 mph
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Old 10-24-2021, 07:54 PM
Sugar Bear Sugar Bear is offline
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Join Date: Sep 2001
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Try shimming the center support bearing away from the tunnel and see if it changes anything. I had a W124 start a vibration at 38 MPH felt in the drivers seat going away on the highway. A shim between the nose of the diff and the floorboard changed the pinion angle and the vibration completely stopped. W123 diff is set-up/suspended differently.

Good luck!!!
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