Hi Guys', ma-mopar originally piloted the wheels on the axle pilot in the rear and also piloted to the drum in the front. This would be the correct way to assure wheel concentricity to the axel or spindle. As Mocajava surmised the aftermarket wheel and axle manufacturers wanted to create universal components to fit a wide range of vehicles so the components often neglect the center pilot feature. Using the studs to locate the wheel will work fine in most applications. Street cars, bracket cars and cruisers utilize the studs for location with no apparent issues. If you are planning on going real fast, piloting the wheel concentric to the axel axis is more of a requirement. Without a pilot I have found it helpful to carefully install and torque the wheel, set vehicle so the tire is just above the ground and use a magnetic base indicator with a piece of scrap and do a rough check for run-out. This can save a lot of time looking for that tire that's out-of balance. I have seen some assemblies that could be improved by indexing the wheel on the studs. If indexing the wheel on the studs nets improvement don't forget to mark the wheel and stud. Lastly we had a set of off shore wheels come in for an OEM that were almost a 1/4" out of concentric. A careful look at your parts can save a lot of headaches. Just my thoughts, Brian.
