Ultra Rogue 175 18 inch
 

Has anyone needed to stop the center cap rattle
I have heard to use oversized O rings size 5 1/4 does anyone know where to purchase that size thanks.

I have Ultra wheels as well and have had the center cap rattle.

I just put a wrap or two of electrical tape on the bottom end of the caps and it has worked fine. When I get the tires balanced and rotated I check the tape and the shop will replace it for me when it's needed.

It's a cheap and easy fix that has worked well for me over the last 7 years.