Marc M said:
I put them in my 265/75/16 BFG A/T's and the vibration got worse.
I had a slight vibration after getting the tires balanced. So I figured I would give them a try, as I to read good things about them, even put them in my buddies Matrix with excellent results.
I put 5oz in each front tire and the vibration got worse.
I'll deal with it in the spring when I put the rims and tires back on the truck.
Marc M
For what we would call "static balance", the beads ought to have helped.
If they didn't it may be exactly that what you have is an imbalance that is offset from centreline of the tread , resulting in the moment (tendency for that spot of the wheel to move outward from the plane of rotation). The only way I know of to resolve that is with computer spin balancing that determines which side of the wheel each weight goes on, as well as the location around the rim.
Boring explanation alert!-
Imagine that we have a perfectly balanced wheel. We then replace the valve stem with one that weighs an extra 2 ounces, and we put another 2 ounce weight 180 degrees away, but on the opposite side of the wheel. If we put the wheel on an old-fashioned "static" bubble balancer, it still looks balanced. (Wheel is horizontal, just as much weight at each end of wheel, it's just that the 2 oz added to each end are on opposite rims.) Put the wheel on the vehicle and spin it- the extra weight on the inside of the wheel tries to move radially outward, and the extra weight of the valve stem tries to do the same. Looking at the wheel rolling toward you, the centripetal force of the valve stem is offset from wheel vertical centreline by about 4 inches to the outside, and the other weight is about 4 inches to the inside. Since they are located 180 deg apart around the wheel, this puts their centripetal forces in opposite directions, but 8 inches apart. This creates a moment (like your hand on an 8" long wrench handle) trying to rotate the wheel perpendicular to the plane of rotation. It'll give you a wobble or shimmy feel, as opposed to a loping or hop. The beads inside the wheel will center their mass on the approx center of the tread and will be of no help in balancing the effect. I suppose that the low stiffness of the sidewall of radial tires might even be such that the beads could make it worse, particularly at certain speeds.
If, however, one were to use balance weights to take care of the "dynamic imbalance" of the valve stem and the other weight, then the beads could handle rebalancing any static balance that remains, or that would occur with tread wear, mud accumulation, etc.