This is not your plain Jane Spare Tire Mounting Plate, it is the leader of the pack in the spare tire world! We start with 3/8" A536 Plate and Laser cut a nice even circle with 4 holes. Those holes are the size of Toyota wheel studs, then we add 4 more holes the size of GM/Ford standard 8 lug wheel studs. After that we cut another 3/4" hole in the dead center to be a plug weld placement after you use it to center it on your Spindle arm. These definately need to be welded on so don't even think a 3/4" bolt might do the trick, its there for guidance and centering, nothing more!