CONSUMER WAS TRAVELING 45MPH ON HIGHWAY AND SHE WAS APPROACHING A MAJOR HIGHWAY ON RAMP, AND HEARD A BOOMING NOISE. SPRING BROKE AND PIERCED LEFT RIGHT DRIVER'S SIDE TIRES. SHE WAS ABLE TO PULL OVER TO SHOULDERS.*AK THE CONSUMER BELIEVES THE CAUSE OF THE SPRING BREAKING WAS COLD TEMPERATURE RATHER THAN CORROSSION. HOWEVER, THE CONSMER ALSO INDICTED THAT SPRINGS WERE BREAKING ONLY IN AREA OF HEAVY SALT ROADS. *YH