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Balancing tires while on the vehicle or trailer is not a good idea. I was in the tire business back in the 60's, 70's and early 80's and my brother is still in the business today. Balancing on the vehicle will balance in any problems or looseness you maybe having with the suspension. While this may sound good it isn't. On vehicle balancing could disguise or hide other problems. Also, you cannot rotate the tires without having to pay for rebalance. If you get a flat, the tire and wheel have to be put back on "exactly" the same position they were balanced in.
Off the vehicle, Computerized spin balancing using the lug pattern is the best way to balance any tire/wheel combination. Remember you only want to balance the tire and the wheel and NOT the suspension.
uhftx is correct about the stick on adhesive weights on the aluminum wheels and trying to hide the weight on the backside as Montana Sky does is defeating the dynamics of the balancing. A properly balanced tire wheel combination must have the weights on both sides of the wheel. Placing the weights on just one side takes away the "dynamic" balance.
Off-car spin balancers actually check two kinds of balance, "static" and "dynamic." Static imbalance causes a wheel to shake up and down as it spins, so static balance is achieved when both halves of the tire wheel assembly weigh exactly the same. Dynamic imbalance causes a tire and wheel to shake back and forth or sideways as it spins. Dynamic balance is achieved when the front and back sides of the wheel and tire weigh the same.
Tread wear of an unbalanced or imbalanced wheel is cupping of the tread
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