[omowasu]

It does look like you were running with toe-out alignment. Many performance cars run a little toe-out from the factory, and some people get their cars aligned toe-out (when the tires look like /---\ instead of |---| from the back) to increase handling in sharp corners. Trouble is, especially with low-profile tires, it causes a lot of inside wear. Those tires look pretty well-used - what kind of car are you driving and have you had it aligned toe-out for track use?