Why is roadforce balacing necessary?

[Pelican]

Originally Posted by Traction
Originally Posted by cpayne5
Road force balancing seeks to remove vibrations not caused by weight imbalance. Essentially, vibrations that only exist when a tire/wheel are under load.

Actually the road force part of it is checking for road force/run-out. As far as the balance part of it, it works the same way as any other balancer out there. Road force is not factored into the actual balance. It is a separate check, so just because a shop has a road force balancer they can skip that step if they choose, and it takes less time.


Exactly ! Because it takes more time and additional skill by the operator they only use it to solve a problem and not to balance every tire.

 

[mclasser]

I've had it eliminate vibrations that regular balancing couldn't. Most important thing is finding a competent shop to do it. Most places just don't care enough to do the job right.

 

[dbias]

"Standard balancers know the diameter of a wheel, how wide the wheel is, and how far away it sits from the sensor that measures the run out. In a standard balancer all it is doing is looking for the slight variations of out-of-round in the wheels and tire assembly. The weights help to even out a side-to-side wobble (lateral run out) or an up and down wobble (radial run out). What is missing from the measurements is the amount of force the tire can throw off."

The low profile tires are more susceptible to having the sidewalls throw off extra force where the belts overlap and putting this area of the tire opposite where the wheel itself throws off the most force will help them balance each other out and this extra force from the tire is only exposed while it is being put under a load. freewheeling in the air with no force will not show this effect of the sidewall interacting with the road.

 

[supton]

people used to get by with static balancing. Except for a few problem tires that needed dynamic... Just another tool.

I wonder if yesteryear ran lower pressure tires and if that helped dampen balance issues. And if driving speed matters--most balance issues seem to be around 60mph. Avoid that speed and it's a non-issue, right? Also, back in the day, tires got changed far more often, as the tires simply wore faster. a "bad" set wouldn't be around that long.

 

[zzyzzx]

Why is roadforce balacing necessary?

It's okay necessary if you have oversized rims. Meaning most vehicles built in the last 20 years.