Erick,
With the emblems being in the center of the centrifugal force, they would be fine and would hold.
My concerns would be that they
could slightly effect the ballance of the wheel. Though the emblems are light weight, and probably wont effect the ballance at all, I just dont know.
I think that emblems would probably hold... especially with the high grade 3M Adhesive that you put on the back. 3M is KNOWN worldwide for some strong holding stuff
