Strangely enough I saw a tire shop dude take off one with one of those "Gator" sockets that you see on TV that grip onto weird shaped bolts and stuff. Is yours a McGard wheel-lock? The ones the Volvo dealer installed on my 850T are McGard and I don't see how those things could break off. But there's only 80 ft. lbs of torque required to tighten those lugs bolts so it shouldn't be too hard to remove, unless some ape overtightened the crap out of them with an impact driver or something. I recommend buying a 1/2" drive torque wrench if you don't already have one, so you can tell when you have 80 ft lbs on the lug bolts when you're retightening them. Disc-brake rotors are sensitive to warping from overtightening. Try calling around to your local autoparts stores and see if you can find one of those grip-all sockets, they're only about $10-$15 and you might be surprised that it works. Cops say they're used all the time by car thieves to steal the expensive rims that almost always have wheel locks on them. Good luck ............ Mike ........... Miami, FL