Re: Rotor Warping

[DeWitt Harrison <de@aztek-eng.com>]

On Fri, 3 Oct 1997 17:13:46 -0400 (EDT), Vince wrote:

>About 3 months ago (7000 miles ago) I had my front rotors cut due to steering
>wheel shaking while braking.  The shaking is back.  Is the Audi prone to
>rotor warping or could this be systematic of another known problem?
>Thanks
>Vince
>1990 200Q

To my knowledge, rotor warping is not a common problem for these
cars. I have abused the rotors on my 88 5kcstq _mightily_ including
multiple club track events without experiencing any sort of warping
problems.  Warping can be induced, however, by getting the brakes
very hot and then holding the brakes after the car is stopped. For
example, it's a bad idea to set the hand brake or sit in the car with
foot on the brake pedal chatting with someone immediately following
a couple of laps around the track without the benefit of a cool down
period. But this would not apply in normal street driving.

Look to the proper condition, installation and alignment of rotors,
calipers and the braking system in general. For example, do the
rotors get really hot just driving around town? Beyond that, you
may need to start checking lower ball joints and other suspension
components for wear. Within the last couple of days, QSHIPQ
posted a good list of front suspension suspects. Check the
archives.

DeWitt Harrison    de@aztek-eng.com
Boulder, CO
88 5kcstq