stock studs
PN 100-7708 12mm X 1.5, 2.5" long
pn 100-7713 12mm X 1.5, 3.5" long
Here is the pic of the 2.5" studs on my car with a 3/8 spacer for my front runners.
PN 100-7708 12mm X 1.5, 2.5" long
pn 100-7713 12mm X 1.5, 3.5" long
Here is the pic of the 2.5" studs on my car with a 3/8 spacer for my front runners.

weld prostars? 15x3.5? did you need to grind?
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I didn't on my car. I just pounded one out with a hammer and used a spacer I had around to take up some of the gap and threaded a nut onto the stud. Then I used an impact gun to tighten the nut until the stud was fully seated. I know its probably not the best way to do it because the hammering puts stress on the hub and pulling them on with a nut can cause stress on the threads and such but I've done the exact same thing all my other cars and never had an issue.


