[Dean]

Different bolt thread diameter, pitch and possibly required torque are probably part of your perception.

As I said before, the hub-wheel interface should carry no load on any studded or bolted wheel except in the event of a loose wheel while on the ground or some portion of the wheel weight before the lugs are tightened in the air.. On a hub centric wheels, in most cases, they will actually not be any contact between the hub and wheel at the bore once the lugs are tight. the clearance that allows the wheel to slip on easily will be equally distributed around the hub so the wheel will be clear by .0001" or more all the way around.