I had to remove those exact lock nuts off my teg few mths ago cuz i stripped the key trying to remove it ( fuggin rust
).......anyways what i did was go to an autoshop/muffler shop or w/e and what they'll do is weld a lug to it then remove it that way so it'll be useless once removed.....the mechanic had to do it to 2 wheels of mine and he charged $20