Installed a set of BFG 36 x 13.50 R18 KO2 MT. They are on XD Rockstars. I have had them balanced x2 ( both stick on weights and rim weights ). They still have a terrible shake at about 60 mph. You can start to feel it around 40, but it is tolerable up to about 50-55. One tire only needed about 4 oz, another about 10, and the other 2 have 14 and 16 oz. I recently rotated the tires, putting the least weight up front, and the shaking got worse. Has anyone used the balance beads with good success? I'm about to sell these real cheap!