There are 4 reasons why I am now without them and not sure I want to have some is:
1- twice now, the oem (or dealer supplied) nuts have broken (the end popped off like a cap) and left me no choice to have to go to get the rest of the broken lug off in a garage (will add pics later...)
2- most wheel thiefs know how and are equipped to remove them without needing the key
3- Considering that once you have lock nuts, its important to keep the key in the car... Most wheel thief's will know this and could also break a window to get the key.
4- this:
http://www.oreillyauto.com/site/c/d...mn=Performance+Tool&mc=PFM&pt=N1772&ppt=N0639
In the end... if someone wants to steal wheels, they will find a way no matter what the safety measure.
The best way to prevent theft could be fake hubcaps to attach/clip over alloy wheels when you park... nobody steals those. lol
But I would get tired of it quick and not even put them on after a while...