[masraum]

As suggested, go to the dealer and they'll pull that right off.

But, I had some cheap lock nuts on a Ford Ranger that I bought many years ago. I worked with a kid that was reformed, but had been a hoodlum when he was <18. He told me the secret for my lock lugs was to get a Craftsman 6 point socket (11/16 maybe?), drive it on with a hammer and then take it off with a breaker bar. It worked like a charm, and being young and poor means that I abused the Sears warranty a little bit and just exchanged the sockets with the nuts wedge in place for new sockets.