Stop in for a cup of coffee

This pic tells me everything.

The outer band indicates that the stud was over-torqued at some point causing a circumferential fracture that is evidenced by the corrosssion in the outer band.

The inner “clean metal” core was then torqued to the level indicated for the entire diameter stud...but being only half that size with diameter reduced by the previous fracture, it was also way over torqued for its true diameter resulting in sudden catastrophic failure.

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With corrosion buildup the torque is "false" for all intents and purposes. The corrosion crumbles and wheel is essentially loose.it cannot be properly torqued,and stud is compromised. I have torqued thousands of lug nuts,99.99% with a torque wrench. If i forget to clean a scaly wheel i can feel it isnt right. Pull wheel and sure enough its corroded. this is a non issue with steel wheels.