REAR RESTRAINT TETHER WAS TOO LONG, ALLOWING THE TETHER TO BECOME ENTANGLED UNDER THE REAR WHEEL OF THE VEHICLE, RESULTING IN THE CHILDS SEAT BEING YANKED TO ONE SIDE. 10 MONTH GRANDAUGHTER SUSTAINED SHOULDER BRUISES FROM THE CAR SEATS SHOULDER BELT AFTER THE SEAT WAS VIOLENTLY YANKED FROM CENTER REAR REAR FACING POSISTION TO 45 DEGREES OVER TOWARDS PASSENGER DOOR. *AK