Uneven pad wear ?

[Donald Lamond]

84 4Ks,  FWD,  Disc brakes on front only.

I have just finished installing a new set of pads and rotors. The pads
replaced were a  four month old set of Mintex Red Box.
What I found was the inner pad on the passenger side worn down to 1.5 mm
or about 1/16 while the outside pad was just like new.
The driver side was just the opposite.  Inside like new and the outside
worn down to 1.5 mm.

Anyone have any ideas on how this could happen?

Donald
84 4Ks