10v 90q calipers on a 20v & history of warping

[Perry, Christoper (EDS)]

Megan, I would highly advise ditching the Bendix rotors and getting some ATE
regular or Powerslot Rotors.  They can be had new for less than 50.00 ea
from Rod at http://www.thepartsconnection or probably Chris at
http://www.force5auto.com. Also Brembo make excellent rotors for the Audis.
Is this a 90q 20v?  I thought they all came with dual-piston calipers
(g60's)?  Only the coupes? My 89 90q has single pistons and I have never had
a problem with warping.  I run ATE Powerdisks and Pagid Semi-metallic pads.
The rotors were on sale for 37.00 each at The Parts Connection and the pads
were about 40 bucks.
 Does it seem to happen only on one side or both?  If it is only on one side
it could be a sticky caliper. if it is both sides maybe a bad master
cylinder causing the breaks to drag and overheat the rotors.
HTH,
Chris Perry

	Hey all- I was talking to a friend of mine today about dealing with
my single piston front calipers on my 20v. Here is the history, from what
maintenance records I have: 1. new rotors at 90,142 miles 2. machined those
rotors at 104,309 2. machined rotors again at 112,667 When I bought the car
at 150,000, the rotors were just awful, shaking during braking, and the car
would want to steer everywhere. To my knowledge, these are the same rotors
that were put on at 90,142. I bought Bendix rotors at put them on at about
153000 miles. What a mistake, lo and behold, they are warped after 3000
miles of use. Why is this happening? I've been considering changing to dual
piston calipers and 15" wheels to avoid buying those damned $120 rotors and
hopefully banish whatver this warping problem is. I was talking to a friend
about this...and he suggested just putting single piston 10v 90q calipers
on..which is ideal, because then I would not have to buy new rims and tires.
So, I have 2 questions: 1. Why is this car warping its rotors? Or, maybe it
was just the Bendix rotors? (which I torqued properly) 2. Any advice on
using the 10v 90q calipers? Is this going to screw anything up? Anyone done
it? Thanks as usual-- Megan