Rear wheel bearings

Bernie Benz b.benz at
Sun Dec 23 08:48:49 PST 2007

On Dec 23, 2007, at 8:03 AM, Geraint Lloyd wrote:

> Also the ABS trips off when "really giving it some" in deep snow.
> When the arse end steps out the ABS trips off which I assume is the  
> castle
> ring to sensor gap going out of spec
Our ABS is not a traction control system. It is a braking system,  
active only when braking. You speculate that there is compliance in  
the wheel bearing allowing significant changes in ABS sensor gap. I  
disagree. Even a very noisy wheel bearing will allow very little  
axial deflection of the axle.

> Geraint
> -----Original Message-----
> From: 200q20v-bounces at [mailto:200q20v- 
> bounces at] On
> Behalf Of Scott Elliot Gilman
> Sent: December 23, 2007 10:05 AM
> To: 200q20v at
> Subject: Rear wheel bearings
> What are the most common sounds/indications of an impending rear wheel
> bearing failure?  I have just over 105K on my '91 20 valve 200 so
> hopefully there will be plenty of trouble-free miles, at least as far
> as the bearing issue.  I have had so many other problems over the
> years, even with a relatively low mileage car.  Latest issue was
> transmission braces.  However, my Audi is a keeper for me, since I
> bought it new.  Appreciate the help.
> Scott
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