On Monday, November 18, 2002, at 12:15 PM, Bill Marshall wrote:

>        My front tires are cupping pretty heavily, most of the wear is
> on the
> outside edge of the tread.  The driver's side tire isn't too bad, just
> rounded on the outside edge.  The passenger side is wearing heavily on
> the
> outside edge

Let me see if I remember the wear patterns correctly...

If the tire wears in the middle of the tread (instead of the outside
edges) the tire is over inflated.

If the tire wears on both outside edges more than then the middle, the
tire is under inflated.

If the tire wears on the outside edge more than the inside edge, it may
be toed-in too much. / \

If the tire wears on the inside edge more than the outside edge, it may
be toed-in too little (i.e. toed-out.) \ /

If the tread has unusual cupping the caster (alignment of the
suspension towards the length of the vehicle) or camber (alignment of
the suspension towards the width of the vehicle) may be out of spec.