On the trail ready HD15 15X9 Beadlocked wheel, Can you tell me what size the center hole is? They will be going on a 1981 Jeep CJ8. Thanks for your help.

3.25 CB size for 4.5 and 5 bolt circle, 4.25 CB for 5.5 bolt circle and 5.125 CB for 8 lug applications. We typically use wheels with a 4.25 CB with no issue on the 66-79 Broncos.