DEFECTIVE TIRES: ********GOODYEAR EAGLE RS-A EMT*********** 04/12/12-THIS SECOND EVENT, DRIVING 2007 JEEP SRT8 ON SIDE STREET, TIRE PRESSURE WENT ABRUPTLY TO ZERO AS STEERING WENT OUT CAUSING VEHICLE TO VEER OFF ROAD AND ONTO SHOULDER AND GRASS. UPON REMOVAL OF LEFT FRONT TIRE, TREAD SEPARATION CRACKS WERE APPARENT, SOME AS LONG AS 1-1 1/2 INCHES, AT LEAST ONE OF WHICH SEPARATED THROUGH TO AIRLOCK. INNER EDGE OF TIRE VERY MUSHY ALONG 14-16 INCHES OF WHERE SEPARATION OCCURRED. TIRE REPLACED WITH SAME ISSUE. THIS EVENT IS ALMOST IDENTICAL TO AN OCCURRENCE THAT HAPPENED SEPTEMBER 2011 ON THE SAME VEHICLE, REAR TIRE DISPLAYED SEPARATION ON INNER EDGE OVER LARGE AREA. TIRE DEALER ADVISED LIKELY DUE TO POTHOLE, WHICH WAS NOT AN EXPERIENCED EVENT [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) *JS