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Toby930 Toby930 is offline
Tobias A
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Join Date: Jan 2010
Location: Stockholm, SWEDEN
Posts: 160
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Need your advise, Rear Bearings "play"

Hi Guys,

I hope I can get some help from you regarding my rear bearings on my 930. Was out driving the other day running higher speeds. I've got some very nasty vibrations from the rear when going above 110 mph. Reaching approx 140 mph got very scary and "shaky". I suspected that my rear bearings are causing these bad vibrations.

I got new bearings installed 2 years ago. Had them replace by a Porsche workshop as we didn't dare to change ourselves. I'm told that they need to me torqued correct and everything has to be just right. As our 930's go very fast you want to make sure everything is correct.

I now suspect that there is too much play at my bearings. Everything was swapped to new parts incl the "crunch sleeve".

I have filmed the "play" on both sides. If you turn up the volume you can hear the knocking sound. It's kind of hard to see the play as the car starts to rock a bit. When going fast and then slowing down you can hear a "huming" sound. This goes away if I steer back and forth or if I slighty press the brake pedal.

Here are the 2 vids:

Left side:

Right side:

Many thanks in advance!

/ Tobias
Old 05-29-2013, 05:53 AM
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