Recently I'm hearing something roll from one side of my car to the other, as I make a sharp turn (Left or right). I looked in the footwells, but nothing there. The sound is like a loose pebble rolling around somewhere, whenever I make a turn. I took off the front grill and checked the space beneath the radiator, there was nothing there. Could it be under the front clamshell? Has anyone ever experienced this? I hope to pinpoint the location, the sound is starting to drive me nuts.