Tractor Trailers profit from using Dyna Beads
wheel balancing,tire balancing

Dyna Bead FAQ

Why aren't my tires on the chart?
Do I need Filter Valve Cores?
Can I install the Large beads through the valve stem?
Can I use the small beads in large tires?

Can I use Dyna Beads..

..with my Automatic Tire Inflation system?
..with my Tire Pressure Monitoring System (TPMS)?
..with my Cats Eye Pressure Equalizing system? my 5th Wheel with Dexter Torflex suspension? my motorcycle?
..for motorcycle road racing? motorcycle tires with tubes? my H1 Hummer?
..with Nitrogen in my tires? tires with inner tubes? tires with RhinoTire runflat coating? Run Flat tires?

Should I use Dyna Beads in my new Super Singles?
Why don't you have tire charts for cars, SUV's or minivans?
Do I have to remove my tires from the vehicle to install Dyna Beads?
How do I install Dyna Beads through 90° valve stems?
The filtered valve cores won't fit my 90 ° valve stems. What do I do?
Will your beads damage my tires or alloy wheels?
What is a Maintenance Level application?
If there's moisture in my tires, will it stop the beads from performing properly?
Can I put the tire on a balancer to see if it's working?
When you come to a stop, do the beads fall to the bottom of the tire?
Will I hear the beads while driving?
At what speed do the beads start to work?
How easy is it to install?
How much will I need?
Do I have to remove my wheel weights?
Is there any way I can speed up your Applicator process?
Can I use Dyna Beads in my airplane?
What kind of tire life can I expect?
What if I have a flat?
Will an internal tubeless tire patch effect the beads?
Can I reuse the beads in my next set of tires?
Why does my Honda GoldWing front tire have tire cupping on one side only?
Is there any situations where Dyna Beads are not recommended?
Can Dyna Beads fix my vehicle's [shimmy, shake, wobble]?
How can I tell if my tire has a lateral imbalance problem before installing the beads?
What installation method is best for me?
Why not use less expensive glass beads?
What about Mechanical Balancers?



Take a look at how we define efficiency in balancing media.

Efficiency for balancing media is defined by four primary factors:
  1. Weight per unit of measure (g/cm)
    The heavier it is, the less product it takes by volume to do the job. You get too much material in the tire, and it can't concentrate it's weight into a small enough area. Due to centrifugal force, the extra mass of material ends up "flattening out" over a large surface area, defeating it's efficiency.

  2. Resistance to movement
    Irregularly shaped media has to "slide" along the inner tire surface, and naturally, sliding creates a lot of resistance to movement, in comparison to a perfectly round object like Dyna Beads, that "rolls" into position with almost no resistance to movement.

  3. Size, shape, and surface texture
    While this should be just one factor, all of these are related when it comes to "clumping". Balancing powder is composed of many, many small particles of irregularly-shaped substances of rough, irregular surface texture. Clumping is caused from moisture clinging to these particles and sticking together due to surface tension. The more individual particles you have (size), the more surfaces you have (shape), and the rougher the surface ( texture), creates a "target rich" environment for surface tension, and clumping. Dyna Beads are very large comparatively, absolutely round, and perfectly smooth. Moisture and surface tension has virtually no effect on Dyna Beads.

  4. Hardness
    A balancing product that is nice and round with a smooth surface can only perform properly if it stays that way over many thousands of miles, especially important for Fleets. Other materials are much softer than ceramic, and can grind down quickly, and become prone to "clumping". Here's a comparison:

    Mohs Hardness Scale
    • Ceramic (Dyna Beads) 7.0 - Hard
    • Glass 5.5 - Med
    • Stainless Steel 4.0 - Soft


Here's what wheel weights can do to your alloy wheels

Picture of damage done to a rim using standard wheel weights


How it Works .

Here is a graphical representation of How It Works:

Here is a terrific text explanation submitted by Paul Waddell. Paul had asked his friend, a Mechanical Engineer, what he thought about balancing tires with Dyna Beads. Here's his reply.

Strictly for the Technical types, here's some info on why beads are more effective than rim-mounted weights.

There's no place to mount standard wheel weights other than on the edge of the rim. Problem is, that is not where the weight is most effective, for two reasons.

The weight is not centered across the sectional width of the tire. That's why some Tire Mechanics will split the weight into two smaller weights and put one on the inside, one on the outside. The most effective position is directly in the center of the tire, and this is where the beads always are located.

The other problem is centrifugal* force. Lets say, as an example, your 16" tire requires 3 oz's of weight, according to the Spin Balancer. The spin balancer is calibrated to calculate the amount of weight based on the placement of the weight at, in this case, an 8" radius. Once again, this is not the most efficient location for a counterbalance weight.

Continuing on with this example, the inside carcass surface ( next to the tread ) is about 4" farther away from the edge of the rim, to give us a radius of 12". This inside carcass surface is where the beads work, and the farther away from the center they are, the more centrifugal force they develop. So we can use this formula:

R1 = Inside Radius
R2 = Outside Radius
W1 = Weight installed on rim
W2 = Weight of Dyna Beads needed.

W1*R1 = W2*R2 to calculate the actual weight of beads needed.
(3)*(8) = (x)*(12)
24 = 12x
x = 24/12 or 2 oz.

So as we've shown, the beads are much more effective per oz than wheel weights, another reason to purchase Dyna Beads®! Stick-on weights are even worse, due to the fact that they have to be placed on the inside flat surface of the wheel, which is even farther away from the tread than the rim itself.

* OK, let's not get into a discussion on whether centrifigal force actually exists, and the true force, centripetal.