There's no reason it wouldn't work, unless you have fix-a-flat or some crap in your tires stopping the beads. If you don't think they recommend enough weight, go count up the weights on your tires right now and add the same weight as the wheel with the most weights. Additional beads aren't going to hurt it as they will get spaced out evenly. This obvioulsy won't work at low speeds, but if you think about it, something as light as a plastic BB doesn't take much centrifical force to get it riding the tire all the way around. I'd think they would stay in place if you were going anything over about 20mph. And the nice thing about beads is you don't have to get them rebalanced as your tires wear, they rebalance themselves.