Most trailer wheels I have dealt with have been junk, not properly centered and way out of whack. My personal preference is to either run some sort of dynamic balancing; like Centramatics
, with the alternate being balancing the entire wheel, tire, hub brake assembly in place on the trailer. Most shops aren't able to do it anymore. Hunter and Bear used to make a balancer just for that purpose, but no longer make it. Probably for liability reasons.
I have used both DynaBeads and Centramatics with excellent results. We still use Centramatics on our heavy trucks, and I have set on my F350.