One problem related to grinding noise has been reported for the 1998 Toyota Camry. The most recently reported issues are listed below.
Tires wobble/vibrate 70-75mph being the worst. Multiple trips to dealer. 6 tires replaced. Multiple time balancing tires. Latest result - per dealer "we can't fix because it happens with speeds over 65mph and Toyota will not authorize repairs on issues occuring over 65 mph. Also, brakes make bad grinding noise and squeeks forward/reverse - advised it is becuase of the material of the pads. Pads changed once and have anti-lock brakes, but have left long skid mark with one tire and car pull to the side.