Does it do it every time?
On wet roads?
Only the left front?
What have you checked or tried so far to correct the problem??
Is the caliper on tight? All the bolts in correctly?
I have seen where one bolt will come out and when the brakes are applied the caliper moves out and hit the rim causing a noise and the wheel to lock up....check this first.
Just reply as you just did the question will still be open.
Does it make the noise all the time or just when applying the brakes?
Is the noise coming from the wheel?
Is the noise at the wheel?
Are there any lights on the dash on?
would the bearing hub make that noise