16x8 american racing wheels vibration

I recently mounted Ansen offroad wheels from american racing on my 2011 tacoma, Ive balanced the wheels myself twice now and I still seem to have a vibration between 65-75 on the highway only. I balanced the wheels using the hub centric adapter on the balancer machine. After doing some research im seeing that most aftermarket wheels are lug centric. Im thinking I need to balance my wheels a third time using road force and the lug centric adapter for the balance machine. I got the toyota TRD lug nut kit- PTR27-35100. Could it be that I need the hub center adapter for my hubs to help center the wheels? Or that Im running the incorrect set of lug nuts for the wheels? I would just like to bite this vibration in the butt as it is anoyying to have my steering wheel shaking on the way to work each morning. I should note that I am running my factory 245/75R16 tires off my factory toyota steelies. Thanks for any info I need this vibration to be gone for good.

 

Yea they are aluminum alloy wheels. This diagram was provided with my wheels. i believe my rims have either the conical seat or the tapered seat. I wasnt sure that the lug nuts are my issue due to the fact that one wheel seems to be vibrating. But who knows.

 

It seems that my wheels have the conical seat, as do those lug nuts so I may just need to road force.