I guess I still do not get the meaning of hub centric for a spacer. For a wheel, hub centric, to me, means the opening of the center hole has the same diameter as the diameter of the hub. Or very slightly larger.
So for a spacer, as long as its center opening is the same, it should be hub centric. For the 2 Amazon ones, in fact the center openings for both are beveled. So I think as long as the smaller end has the same diameter, it is hub centric. In fact, both spacers have 'hub centric' in their titles. So what I don't understand are the following 2 remarks.
1. "maintain the full 10mm of hub to wheel"
How can I put a spacer and maintain full 10mm hub to wheel? The spacer will have to take away 3mm.
2. The minimum thickness necessary to machine a lip for being hub centric is 6mm.
What do you mean exactly in this sentence? Does it mean since I still have 7mm hub extended out of the spacer, adding a 3mm spacer is still hub centric. but adding a 5mm won't be since only 5mm is left?
It is also interesting that the guy in the following video says that we can use up to 5mm slip-on spacers with stock wheel studs.
https://www.ft86speedfactory.com/fac...l#.XYUCm2Z7lzk