Rear Brakes worn out WAS: BAD dealer service

[SuffolkD at aol.com]

Audi has a proportioning valve which fights front end drive with rear brake 
bias.
In other words, in the old days, front wore first, but some cars pivoted 
around the fronts during braking/cornering.
So to keep this from being a problem they incorp., some rear brake into the 
system to cure that and address some "front end dive".
So the old addage of 70/30 braking force MAY be subjective to the style of 
driving.

FYI:  I smoked the pads down to the backing plates on a 200 20V (156K) at the 
track.  Precheck had the rears between 1/3 - 1/2 thickness.

Audi A6 Avant Audi Assured ~50K Same thing RR rotor scored, pad INTO the 
rotor scored..... Brown brake dust EVERYWHERE.  Audi (after complaining) comped 
the caliper.

A few examples of older (1991) and new ABS style systems (1999) with similar 
outcomes................
HTH - Scott by BOSTON

> From: Taka Mizutani <>
> To: Drew Boyd <>
> Drew-
> You are flat out wrong in this case- the rear pads on our '99.5 A4tq
> wore much faster than the fronts, needed replacement at something like
> 18k. The rear pads in our '01 Beetle wore out at around 48k, front
> pads still have tons of pad left, never replaced.
> 
> It seems to be very common in late model VWs and Audis that the rear
> pads wear faster than the fronts.
> 
> I have not seen this to be the case in the STi.
> 
> BTW, Bosch ABS 5.1 biases heavily to the rear to lessen brake dive on
> initial braking, as does 5.3- ask Keith Maddock for elaboration on the
> system itself.
> 
> Taka
>