PE00 020; WAS TRAVELING ABOUT 40MPH ON A SECONDARY ROAD/ ON A SMALL CURB WITH GRAVEL, VEHICLE JUMPED AND VEERED OFF INTO ANOTHER LANE.THIS WAS CAUSED BY TIRE TREAD SEPARATION. *AK THE TIRE THAT HAD TREAD SEPARATION WAS FIRESTONE AT 16". FIRESTONE DECLINED TO REPLACE THE TIRES. THE CUSTOMER DOES NOT FEEL SAFE TRAVELING IN THE CAR. *YH