You're cornfusing me Ares. You said you never replaced your OEM tires, but you're running oversized wheels/tires.
That seems contrary. Unless you mean that when you plum wore out your OEM tires, you swapped wheels (with new tires on them), and never replaced your OEM tires on the original wheels. Is that what you mean?
Also, I'm at 25k on my Enasaves, and they still look good to go for another 25k. You must have been racing through parking lots like you were on an autocross course. Shoppers like that.