My 2002 9-3 convertible is making a shrill whistling noise at higher speeds. It starts at about 55 mph and gets louder as speed increases. Has anyone else run into this?

 

I HAVE EXPERIENCED SOMETHING SIMILAIR TWICE, THE FIRST TIME IT WAS A WARPED BRAKE DISC, THE SECOND IT WAS CAUSED BY AIR WHISTLING THROUGH MY INDICATOR AFTER SOME LOW LIFE DECIDED TO SMASH IT DURING THE NIGHT[:@]

BOTH WERE ONLY APPARENT AT HIGHER SPEEDS.

ALTHOUGH THE DISC WAS WARPED IT DID NOT SHOW THROUGH IN THE PEDAL WHEN BRAKING

I GUESS IT COULD BE A DOOR/BONNET/WINDOW SEAL ALSO