As far as I can tell, neither of the studs mentioned is designed like OEM, meaning the knurl isn't biting into what GM intended it to bite into.
I'm not an engineer, problem, or not?
I spent a ton of time looking for a larger front wheel stud for a 6 lug front, I found exactly one (1/2") that was designed like the OEM 7/16" stud. I figured GM had a reason to have the lug bite into the hub and not the rotor.
Would you happen to recall the part # for that 1/2" front stud?