non-uniform tire wear

[Zod <famini@deltanet.com>]

Folks:
I have a '95 90Q that runs pretty well.  But can anyone explain why a 
tire on the right side of my front axle would wear more than a tire on 
the left side? 

I noticed that the wear patterns of the two tires are fairly equal, but 
the amount of wear is quite different between the two sides (the right 
tire is spent, but the left still seems to have some life left in it).  

The car does not pull or drift, no wheel shimmy, and no accidents that I 
know of, and I bought the car new ...  I have mentioned the 
'problem' to Audi and they are still thinking about an answer.
 
Thanks for any suggestions,
-Farzad.