Nm and lb/ft are not interchangeable. You're loosing torque through the adapter. You need to use a deep well socket to get more rotational force. You would be better off keeping a $10 Harbor Freight 1/2" breaker bar in you car along with the correct socket for your lugs.
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100Nm is about 75ftlb so it should break the lugs loose. I call operator error
Nm and lb/ft are not interchangeable. You're loosing torque through the adapter. You need to use a deep well socket to get more rotational force. You would be better off keeping a $10 Harbor Freight 1/2" breaker bar in you car along with the correct socket for your lugs.
I had the 1/2 version hasn't let me don't yet