True centerline wheels are rivited togather, the ones that are bolted are cms wheels. The centerlines are better, but both need beadlocks to hold up. I don't run beadlocks just to hold the tire on, I run them to re-enforce the wheel, and to keep from bending the edges. Once you beadlock a cms, it is just as strong as a centerline. Also, a 5 lug is WAAYY stronger than a 4 lug.