[Psoncanada]

I just wore out a set of rear tires on the inner shoulder of the tires (equal both sides). I changed the tires and took the car to the shop. Seems like they are at -2.3, when they should be at more or less -1, and there is no play left to adjust it as the former owner had her lowered. It was explained to me that the eccentric screws were already at the most favorable position. Is there anyone out there that would have an idea if there are any way of addressing this - or do I have to just spend more money on tires over the years or alternatively raise it up again?