Severe Inner Tire Wear

[Jeff.Bernstein at pneumaticscale.com]

Too much negative camber will add very little extra wear to the inside of
tires.  I run between 1 to 1.75 on all my Audi's and nearly 2 degrees of
negative camber on my Porsche without any problems with excessive inside
tire wear.  I set my cars up this way so that they handle better in the
corners.  Setting the car to 0 degrees camber will make your car corner
poorly.  Audi's have enough under-steer by design, you don't want to add any
more by setting the camber to 0 degrees.

If your toe-in is incorrect you will definitely have increased tire wear
which could be made worse by the extra negative camber.  Incorrect toe-in is
the major reason for increased wear on the inside of the front tires.  I
would be willing to bet that your toe-in is way out of specification.  If
you fix the toe-in you can ignore the excessive negative camber and just
enjoy the increased cornering ability that comes with the extra negative
camber.

Jeff