Thanks for the tire pressure info, but resetting it did not help. I set it to the recommendation off the Firestone Website for this wheel and tire size (
http://www.firestonecompleteautocare.com/tires/pressure.jsp) and the sound is still there. Maybe I did bust a cord but I'll wait until this weekend for the mechanic to check....It just strange that this suddenly happen. I was saving up to replace my Boxster body parts with fiberglass to lighten up the car...but thanks for the tire PSI education...very informative