I don't recall the "brand" Malcolm, but I have a socket-type of locking lug
nut set on mine. Rather than the McGard-type that are keyed to fit into the
end of the locking nut, mine is a differently shaped/grooved nut that a
special socket fits over. That locking nut is longer so it sticks out a
little further than the rest. That locking-socket fits into the socket I use
for the rest of the lug nuts. (I use a 16" long, 1/2" drive socket wrench).

When I had my tire stowed on the rear this gave me some piece of mind.

Bob Stevens
'87 Westy Syncro
"Passion Fruit"