I still have the OEM RE070s on my STi, now with 10,000mi on them. Yes, they're toast! But they still work surprisingly well in the rain! Yes, if you lay on the gas you can get the car to slide at will. The same is true in the dry these days
If you're just running back forth to work or the grocery store, even well-used RE070s won't be a problem. Mine are toast and they still grip better in the wet than the Yokohama AVS-ES100s I had on my last car! On the other hand, if you want to go canyon carving in a torrential downpour you'll either need newer RE070s than I have or
an all-season tire.