Join Date: Jan 2009
Location: walled lake MI.
The stud must protrude into the hex portion of the nut at least the diameter of the stud.
This means your 12mm studs must extend at least 12mm past the face of the rim.
It doesn't matter if you have slicks or not. It depends on what rims you use. Race rims usually have a thick center such as Weld Drag Lites. Stock studs won't extend far enough through the rim.
I hope this answers your question.
94 cobra, 393, afr 205s. boxr intake. (SOLD)
New 427 turbo build in progress.