Grinding sound when braking on 2008 Mercedes-Benz CLK350

when I am braking, I can hear grinding sound from the front tire areas...I see no warning of brake problems.

Asked by for the 2008 Mercedes-Benz CLK350
If you are hearing grinding sounds you need to get the brakes checked to see if the brake pads are worn out or whether the noise is just due to the compound of which the brake pads are made from, but get it looked at before it causes more damage or brake failure.