Originally Posted by cdavi060
I am having this same issue, mine is the very rear bracket that holds the muffler on. It has came lose causing a rattle and I nor a local non-BMW shop has this "star like" socket to fit the screw for tightening. Does anyone know the size and style socket needed to tighten it? A standard 8mm socket comes close to fitting, but slips. Would be greatly appreciated. Thanks!
Sorry if I'm too late on this, (and sorry to everyone else for bumping a somewhat old thread) but that bolt is an external torx bolt. Most places will call it an external star, but if you have a Harbor Freight near you you can get a set of seven external torx sockets (impact, but that doesnt really matter) for $10, and sears sells a set of Craftsman e torx sockets for around $30-40, but they're a little higher quality. This particular bolt is an E10.