Dyna Beads

super.secret.supra.club

Supramania Contributor
Mar 22, 2007
1,304
0
0
San Diego, CA
I used something like this before in my 86.5. I forgot what the product was called but it worked really well. i liked it and always thought about putting it on my 92 also.

ed.d.
 

Supracentral

Active Member
Mar 30, 2005
10,542
10
36
I'd like to see a scientific explanation of how this supposedly works. Think about it this way, if there is a heavy spot on your tire, it is going to cause that spot to be pulled a little further away from the rim via centrifugal force and the beads should settle there thus increasing the out of balance situation. I read their "how it works" page and I don't buy it.

In reality, modern high performance tires (like the ones we run on Supras) are very well made. So much in fact that the tires are generally very well balanced and the wheels are more out of balance than the rubber.

I call bullshit until someone can tell me how this product defies the laws of physics.

Note:Testimonials, your "butt" dyno, and any number of "my friend had" stories aren't going to convince me. I want to know where the science is.
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
10,730
1
38
Valley of the Sun
Supracentral;1240749 said:
Note: Testimonials, your "butt" dyno, and any number of "my friend had" stories aren't going to convince me. I want to know where the science is.

Me either, and me too ;)

The presence of "testimonials" on that website is usually a sure fire snake oil indicator.

Ian - the vertebrae? :D
 

MKIII TURBO60-1

New Member
Dec 29, 2008
156
0
0
Ocala,Fl
sounds to me like the guys that put sand in their 35's and 44's and such, just on a smaller scale, ill deal with the ugly look of wheel weights, glad they came out with stick on weights
 

Asterix

Lurker of Power
Mar 31, 2005
469
36
28
Vienna, VA
Wow.

Like 1oz of sand in your tire will do anything for the balance...

I needed a good laugh today. :D

Has anyone had a tire go out of balance over it's lifetime? I never have needed a tire rebalanced that was done right in the first place. I've had the stick-on weights fall off before, but that was because the stupid installer didn't clean the spot first.

Asterix
 

Keros

Canadian Bacon
Mar 16, 2007
825
0
0
Calgary
I don't see how this can help a performance car with 17" rims and 45 profile tires? It is safer, easier, and cheaper to get conventional wheel balancing done to our wheels before we go up past 100MPH.

Regardless of defying the laws of physics, in our application it just doesn't seem (to me) to be a better solution that doing it the right way, even if the beads do work.

I surf a few off-road forums and people running +40" dia tires on 15" rims say they work. Anyone running tires smaller than that don't usually have issues with wheel balancing.
 

IJ.

Grumpy Old Man
Mar 30, 2005
38,728
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I come from a land down under
Read it and still think it's a crock....

In a low speed situation it may work as described and that's MAY, in a high speed tire once the beads are at/above certain load there's no way in hell they're moving to balance anything....

One of 2 things springs to mind here, you're gullible and want to believe or you're trying to push this crap on people and have something to gain by doing so.

1 is excusable 2 isn't.
 

Poodles

I play with fire
Jul 22, 2006
16,757
0
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43
Fort Worth, TX
They've had active engine dampeners and balancers forever that are made like this.

Sadly they don't work at slow speeds, and such small balls aren't going to do crap IMHO...
 

Muzy

Member
Oct 3, 2008
182
0
16
Alberta
Well a company I was working for used a product similar to this I think. But it was employed in highway trucks and only in the steer position.
As I was sceptical the tire man explained it kinda like this. If you look inside the tire
you will notice waves on the inside of the carcass. Look and feel with your hand. These
waves are not perfect some are deeper and some shallow. When you put the right amount
of product in it fills all these waves and makes the inside smooth (different size package for different size tires).
Thus the tire weights the same all around, there for it is now in balance.
For the most part this product worked quite well and if I had the misfortune to hit a pot
hole, all I had to do is slow down to maby 30 then resume speed. Tire was back in balance. It worked well in this application. I would not put it in my car tires, and I'm
quite sure a speed rated tire would no longer be rated the same. Also what we were
using was very fine almost like a powder. In a car no, Supra NEVER. muzy
 

IJ.

Grumpy Old Man
Mar 30, 2005
38,728
0
0
62
I come from a land down under
31NJVZXDE2L._SL500_AA280_.jpg
 

MA702Tone

New Member
Jan 28, 2009
55
0
0
Tennesse
I found this on there F&Q's :

Why don't you have tire charts for cars or SUV's?

We do not market to cars and SUV’s intentionally.
The main reason (among others) is due to the style of modern car tires.
For cars and SUV’s, traditional weight balancing is the best method.
 

Johnysupra

Rhenerie
Nov 7, 2007
125
0
0
Michigan
rhenerie.spaces.live.com
In The steering and suspension classes at The university of northwestern ohio they talk about these alot. They only really touch on them in Auto S&S though and since im not diesel i really didn't pay attention. They said like the majority of semi tires use these. I just remember a hilarious video from the 80's with Richard petty in it and he kept saying "Vib EEEERRations". They werent called dyna bead i dont think though , and they said they were only designed for Biasply tires