I bought a set of steel wheels and 35" tires for my 2011 Jeep Wrangler and wanted to make sure they had a tight, hub-centric fit to support the extra weight I was finding necessary to "help" the rings into the center caps of the new steel wheels. To do this, I placed a 2x4 block on the ring and hit it a few times with a large rubber mallet. The rings are nice and tight, and so are the center caps, by the way. The new wheels fit snugly onto my Jeep hubs and I'm sure they are perfectly centeredβ¦