OK, Moser says the studs are the same one they have always used. So it looks like some of the rotors / hats have a slightly smaller lug hole bore.
Michael informs me that we have also taken a cartridge roll to the lug holes in the shop for clearance. Shows you what I know!
No worries about going to large, the center bore will keep the rotor where it needs to be.
As for the wheels no slipping over the studs...that is a new one, but a tiny camfer on the lug holes with a burr bit would take care of that pretty quickly.
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Frank Serafine
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