 
Posted by Bob on March 14, 1999 at 11:28:57:
In Reply to: STRANGE WEAR FROM FIRESTONE AFFINITY posted by dave z on March 14, 1999 at 00:00:33:
Excessive wear in the center can be a sign of overinflation.  Use a good quality air guage and take a pressure reading BEFORE  you drive your vehicle and make sure it is at the pressure recommended in your owners manual.  DO not take a reading when the tires are warm.  If your tires are at the correct pressure, you may want to take the car back to the CHevy dealer for further inspection.