Hub centric wheels are more for convenience than load bearing , it helps center the wheel before final torqing the lug nuts . If it were for weight bearing it would have to be machined to much tighter tolerance and pressed fit .Almost all oem wheels now are hub centric for this reason , even on small cars . With lug centric wheels more care has to be taken to gradually tighten the cone lug nuts to insure they are all centered in the holes before final torque . Almost no aftermarket wheels are hub centric , including 19.5" , yet some have higher load ratings than oem wheels . 1ton and above dual wheel lug nuts have washers instead of cone shape to exert even more clamping force . It is also way they should be hub centric or have centering rings .