Hi all, Just got some method standards and goodyear mtr's installed. Really happy with the look and how quiet the tires are. Everything was great until I got on the high way. At about 60MPH the truck was shaking all over the place. My initial thought was that they must have miss-balanced my tires right? I called the guy that did the mount and balance and he said the following: "The MTRs have sandbags in them and if you drive on it for a little bit the bags will even themselves out and the vibrations will go away." I am not a tire expert, but this seems wrong.. Any thoughts guys??