91 525i going through rear hub bearings

Jim_H

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Phoenix, AZ
#1
Hoping for some help on a high mileage 525i (200K).
I replaced the wheel/hub bearing on the right-rear about 6 months ago and now I've got slop in that bearing AGAIN.
Here's my question: Will worn Pitman arms (we're still talking about the rear, although some deny that BMW put Pitman arms in the rear, they ARE there, sometimes called drag link or trailing arm link) put undue stress on the bearing and cause fast failure?
If you're familiar with that rear hub bearing, you know that it's about the diameter of a Coke can and about half the height so it's impossible for it to be installed 'crooked', the snap ring was installed correctly and the hub nut was not loose.
The only thing I can think of is that the Pitman arm (severely beat) is causing the excessive camber (I also have wicked tire wear on the inside of that tire) and is causing the bearing to fail. I've ordered up the Pitman arms -and another bearing- but was hoping someone could lend a confirming -or disenting- opinion.
My wife just gives me a blank stare when I try to explain this to her. . .
Thanks,
Jim H
 

onnyap

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Location
malaysia
#2
6 months? you must be kidding Jim.
Is your supplier reliable? Anyway I think there are 2 stress factors indirectly affecting the bearings.

1.Smooth rotation of the wheel. Check-out the wheel balancing and dented rims.(too many potholes)

2. Shock absorbers. Worn-out shocks make the wheel hops and vibrates more frequently on uneven surfaces.
 


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