I have recently taken my car to a mechanic to have the breaks checked because of squeaking sound. I was told that the brakes in the front were really bad and it was "metal on metal". That the pads and brake rotors had to be replaced. The cost to fix it is way more than the car is worth so i decided to purchase another car. However, my brother insists that all i need to do is have the brake pads replaced and the car will be ok and save to drive. He has replaced his own brakes and knows more about cars than I do. But just replacing the brake pads doesn't sound right to me. Is he right? will replacing the break pads be enough? or do the rotors have to be replaced too to make the car safe?