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brainz01 brainz01 is online now
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Join Date: Jan 2016
Location: Houston
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Need help with a strange cyclic car vibration

Quote:
Originally Posted by ninelevenick View Post
I know you didn't feel any play in the wheels, but don't rule out wheel bearing failure. I replaced a front wheel bearing on my 996 that was bad, but it still passed the old 9, 3 and 12, 6 wheel grab and shake test.

Yeah, wheel bearing is my leading hypothesis. Maybe one is on it’s way out — has a pit in a race that’s giving all the multi-order vibrations?

What were your symptoms on your 996?

I’m kind of hoping an engineer/rotating-equipment mechanic will see my charts above and say “obvious wheel bearing issue”.

I forgot to mention. I also replaced brake rotors with new ones. No change.


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Old 04-10-2020, 09:39 PM
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