f355 converting to wheel studs

https://otisincla.com/product/otis-inc-la-m14x1-5-screw-in-hub-stud-w-inner-hex-62mm-shank-73mm-tl-black-zinc-copy/


these will work.

 

So I was doing this as well and ordered the OEM challenge wheel studs since I also have the challenge wheels. I was pretty sure I had confirmed on here that they would work with the stock and optional drilled rotors and hats but when they went to get installed today, the guys are telling me that the studs aren’t threading in enough. Definitely not enough to be safe for road use. Attached is a photo they sent showing the standard bolt on the left and the black stud on the right that only threads about three spirals in. Can someone confirm of these actually do work with these rotors and hats?
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The "collar" on the challenge studs must be preventing them from threading in any further. Are the holes in your rotors big enough to acommodate that collar?

 

Will these work with challenge wheels or only the stock ones?

 

I think it’s a depth issue as it seems like they don’t screw in far enough to even reach the collar