Difference between 1995 90Q and 1995 90Q sport

[Wayne Dohnal]

Does anybody know what's different between the 1995 90 Quattro sport and
non-sport models?  The Audiworld specs say the only differences are the seat
fabric (not a factor with leather, which most of them seem to have), and the
tire size.  I drove one of each in the same day and couldn't see any
difference.  Surely something more than the tire size must be different
between two different model designators.