Heard some squeeking/scraping sounds in the rear, mosly when braking (inconsistent), so assume I need new brakes. I called the dealership and they said they doubt it's brakes (very rare).....what else could it be? suspension? Was in a parking garage and heard it again, but when driving slow (not braking)...seems to squeek/scrape as the tires spin at low speed? Any thoughts? I will surely take it in for inspection