# How does this tire balancer work?

**URL:** <https://boards.straightdope.com/t/how-does-this-tire-balancer-work/618447>\
**Category:** Factual Questions\
**Created:** [April 11, 2012, 8:08am UTC](https://boards.straightdope.com/t/how-does-this-tire-balancer-work/618447 "2012-04-11T08:08:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![snailboy](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@snailboy](https://boards.straightdope.com/u/snailboy)\
**Post date:** [April 11, 2012, 8:08am UTC](https://boards.straightdope.com/t/how-does-this-tire-balancer-work/618447/1 "2012-04-11T08:08:07Z")

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In [this video](http://www.youtube.com/watch?v=skY6qvzpNXI), you can see that the tire is balanced because the marbles roll away from the heavy part of the tire (where the magnet is) to balance it out.

Now here’s what I would think would happen. The heaviest part of the tire would be pulled the most by centrifugal force so it would be pulled a little further away from the center of rotation while the opposite side of the tire would be pulled in a little. This would mean that the heaviest part of the tire would end up being “downhill” in a sense and all the marbles should roll to that part. Why isn’t that happening?

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**Author:** ![Nunzio\_Tavulari](https://avatars.discourse-cdn.com/v4/letter/n/b9bd4f/32.png) [@Nunzio\_Tavulari](https://boards.straightdope.com/u/Nunzio_Tavulari)\
**Post date:** [April 11, 2012, 8:50pm UTC](https://boards.straightdope.com/t/how-does-this-tire-balancer-work/618447/2 "2012-04-11T20:50:56Z")

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This has been debated several times. Try searching on Dynabeads

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**Author:** ![snailboy](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@snailboy](https://boards.straightdope.com/u/snailboy)\
**Post date:** [April 11, 2012, 8:57pm UTC](https://boards.straightdope.com/t/how-does-this-tire-balancer-work/618447/3 "2012-04-11T20:57:17Z")

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I’ll check that out. I did a search before posting this but I guess I used the wrong keywords.

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**Author:** ![RedSwinglineOne](https://avatars.discourse-cdn.com/v4/letter/r/a9adbd/32.png) [@RedSwinglineOne](https://boards.straightdope.com/u/RedSwinglineOne)\
**Post date:** [April 11, 2012, 11:10pm UTC](https://boards.straightdope.com/t/how-does-this-tire-balancer-work/618447/4 "2012-04-11T23:10:14Z")

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[This](http://www.dynabeads.co.uk/how.php) is a link to their website.