front to back the tyres!i have had this on the rare occasion doin a complete wheel alignment.would be an idea if u have uneven tyre wear on the front to get ur wheel alignment checked also.remember that if ur rear alignment is out ur front will always be out this is called crabbing,the technical term for rear alignment is"thrust axis deviation". on gettin ur alignment checked it may uncover a suspension fault (usually wear) this must be rectified for accurate alignment.
phlipflop
December 2006