hallo.am driving 90's saga.i got problems with the wheels.the 1st time is the bearing.foreman told me that my drum oso not gud oredi..so i change.after 11/2 mth,it start making woooo's sound..i've change Left n Right rear bearing twice.but the sound still exist.changed the tyre oredi.2nd hand lah.still the same.wut else do i need to check,huh?