Competition Which is better Dynamic Balanced tires or Static?

[Morepower]

I was wondering what people are using to balance their tires. I was concerned that Dynamic balancing only goes to 50-60mph. I think race cars use static balancing. Which is better?

 

[MJawsman]

My understanding is that static balancing only balances the wheel for one type of runout... side to side I think. Dynamic balances up and down as well as side to side. Speed has nothing to do with it. In fact, from what I was told, early computer balancers only truly balanced a tire at 5, 55, and 110 mph. The other speeds were averaged for balance. That's probably why you may get an intermittent vibration on a poorly manufactured tire. Then again, it's been almost 20 years since I was taught about tire balancing so who knows what's changed-especially with these new road-force units. I'm sure someone on here has more knowledge as to how balancing is currently achieved.

 

[dan_gilson]

Racers use dynamic balencing. There are a couple of tire machines that spin up a lot faster than the 70-95MPG range that most of the stock units go to.



There is a lot more to it than just balence. If you really want to know more about the right things to do one of the best descriptions that I have seen can be found at: http://www.ricksontruck.com/matchmount.html



My tire guy has been giving me this lecture for the last 20 years. And they are associated with Rickson.

 

[WyoJim]

Geez dan... . I tried the web site... . How long does it take to load? Maybe I will start it again before I go to bed and it will be loaded when I get up in the morning.

 

[michaelmurray]

Static balancing only accounts for a single plane. Think of a vertical shaft revolving about its axis. Static balancing should only be used on very thin objects.



Dynamic (or couple) balancing accounts for the thickness of the part. Dynamic balancing can only be measured when the part is spinning, where static balance can be measured with either the part rotating or not.



For example, think of a thick cylinder. Place a weight on one end at the edge. Place another weight 180* opposite of the first weight at the other end of the cylinder. This cylinder is statically balanced, but when the cylinder starts to rotate, the axis will wobble (dynamic unbalance).



If this doesn't make sense, let me know.

 

[JoeyD]

Have any of you guys tried Equal? Not the sugar substitute for coffee, the stuff they use in the big truck tires.

 

[dan_gilson]

It looks like http://www.ricksontruck.com/matchmount.html has a problem loading on Netscape. It took me 14+ seconds to load and I am sitting on a really fat pipe here at work. I think we have multiple T1.



I swapped over to IE 5. 5 and it was much better. Please give IE a try and enjoy.



Rickson page seems to load multiple times on Netscape. I do not know what the problem is but it is pretty bad. It does finally get there though.

 

[Turboman]

Centramatic

Check out Centramatic They are rings that go on behind your rim with beads in them, they continuoisly balance the tire and wheel as you go down the road. A set for our trucks(2500s) is $221. 42 in Texas with sales tax. I've noticed considerable less vibrationsn from my large tires(305-70/16). When I installed them I had the tires rotated and balanced and hopefully I won't have to Balance again for the life of the tire. I liked them so much I ordered a set for all my big rigs!