After that um not sure about it anymore but I had a used trust knob that had like five pounds of threadlocker in it so I remembered about the lugnut and I went and got me a cheap extended lug and some vice grips and throttle body cleaner (that crap will eat anything) and went to town basically rethreading it, and it was 12x1.5 and the knob works fine so idk, my opinion is if both fit then the smaller IS probably correct buuuuut both DO work