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Zackman218 Zackman218 is offline
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Car: 2011 BMW 335i M-Sport
Default N55 Crank pulley wobble - 08-08-2019, 08:18 PM

I noticed a few days ago while my engine was running my crank pulley aka harmonic balancer had quite a bit of wobble to it. I don't have any sqeeling noises or anything but I'm a little concerned about the wobble. Just wondering if anyone has experienced anything like before the car has 60k miles on it and I can't imagine my harmonic balancer is already going bad.
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sicknick530 sicknick530 is offline
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Car: 2011 BMW e92 n55
Default 09-17-2019, 10:53 AM

Yes I have. I replaced my crank pulley at 60k when I didn't need to. That pulley is made to wobble like that to absorb engine vibrations. I thought to myself, No way its way too much but its just BMW. You can grab a hold of it and try pulling/pushing it and if there is any flex then its bad. You'd be able to see the rubber cracking and looking brittle if its bad.
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