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Re: Wheel Bearing Maint. question
>I wonder whether it would be worth pulling the bearings to inspect/
>clean/ replace them.
Bearings on Qs are of the hub genre. They are non-greasable/cleanable.
If you pull them to inspect them you _will_ destroy them and you by
extension will replace them. Bearing failure/degradation noise is a
humming sound not squeaking.
On my 5000TQ I have replaced the fronts twice (every 100K miles), one
rear @180K Miles and the other @240K miles. I now have 249K miles.
P.S. Have you checked the CV Boots?