I've been using them in my tires for about three years and while I can't say they don't work, I also can't say they DO. My tires are wearing as perfectly as one could want, but would they be the same without the beads???? Who knows. I DO know I haven't spent any money on balancing and dropping weights and re-balancing. Not sure the cost justifies the outcome, but they're in there now and they're not coming out until the tires are shot.
"It`s not important that you know all the answers, it`s only important to know where to get all the answers" Arone Kleamyck
"...An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." Col. Jeff Cooper
Sunset Creek 298 BH