I am posting this for those, like me, that have a breaker bar with socket in my ST just in case I have to change a tire. The reason for the breaker bar, the TQ spec is 162 ft lbs. The owners manual states that after changing a tire, the lugs need to be tq to 162 ft lbs within 100 miles. The provided lug wrench is not likely to come close to that tq setting on the road.
This is just what I found on my ST. It seems the 13/16 socket is the correct size for my wheel lug nuts(I say this for my 21” wheels as who knows with quality control from one to another ST). When trying each size above and below, this is the size, but it is a Really tight fit. I have to leave the lug nut on a few threads and work the socket to get it off. I have tried different sockets with the same issue. I have the Ford wheel lock set and the 13/16 nor any other socket will properly fit the locking lug the correct way.
I found that a 21mm is a perfect fit for the lug locking adapter and works well on the stock lugs. I have both the 13/16 socket and the 21mm to ensure I have it covered. Suggest that you check out to ensure the stock or whatever setup you have will work as expected before needed on the road.