Yes I searched... I know that aftermarket wheels need them if they don't have the same center bore. Does anybody know where I can get some from? I tried discount tire recently (where I got the wheels from) they didn't give me them to begin with, and when I asked for some they didn't fit...

if it helps, I have Enkei 5+ 17x7's. and, what material is best? because if I can't find anyplace that will sell them, or has the right size I might actually machine my own.

I have a feeling that that is the reason for my really shaky ride.