My OE/OEM B'stone Turenza EL42s (with the star on the sidewall) developed the whistle on concrete hwy surfaces when they were over half worn down. They get even louder at speeds over 80mph.

__________________
'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!