If your car has drum brakes, it could be something inside the rear brakes making that metalic noise on the brake drum.
If you can see nothing with the car up on a hoist, then inspect the rear brakes by removing drums.
If your car has drum brakes, it could be something inside the rear brakes making that metalic noise on the brake drum.
If you can see nothing with the car up on a hoist, then inspect the rear brakes by removing drums.