if im not mistaken its 4". the machine shop removed 600 thousanths from my escalade wheels.
Well I dropped em off and they grabbed a measurement off of my stock wheels. Its not quite 4" though. 4" is into the countersink for the lug nuts.
Its 4". Just measured the wheels in my garage for you.
weird. Well my trucks a 93..maybe the hubs are smaller? Cuz the guys measured em at 3.6 or something. I'm gonna pull one off today and double check since the wheels probably haven't been started on yet.
I remember the magic # of 3.9 for some reason?