I have noticed a metal scraping sound coming from the front left side of my 04 Tundra DC. The sound only happens when I turn left, like into a parking space or a driveway. I took the front tire off, turned the wheel left and spun the rotor and cant duplicate the sound. I suspect a wheel bearing or whel hub, truck has just turned 100,000 miles. Any thoughts or advice on what to replace is greatly appreciated.