ive had my subs for about a year now. theres a few rattles that just started a few weeks ago. i dont know if its due to the cold, or the subs. i normally dont have the subs up very loud, but every once in a while ill blast them. theres one rattle in the drivers side door panel somewhere near the window. theres one in the steering column, the thing that you press to honk the horn, but thats due to a new steering wheel that ford put on wrong. and theres one squeek, on that felt piece that covers the trunk in the zx3