How do i remove locking lug nuts with out key?

try using an old 12 point socket just about the size of the lock (you want a god tight fit) and a good size hammer watch you fingers in the next step as you will have to hold the socket over the lock and POUND the socket over the lock. use a ratchet if you haven't beat the socket so bad it won't accept a ratchet if so you will have to use a pipe wrench or something similar. the only other advice can give to you is take a good cold chisel and the hammer and bite into the edge of the lock in the direction to take it off (remembering that mopar vehicles use different rotations to remove).

IF you are trying to steal the tires or rims be advised that both these examples are very noisy and you WILL get caught before you can be successful.

I believe this did use to work in 1955, (what a load of old shite). Modern nuts have a spinning ring to stop this, plus most new locking wheel nuts don't have enough room round them between the nut and the rim. Just google "locking wheel nut remover"..