Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Tire balancing calculation

Tire balancing calculation

Tire balancing calculation


I'm looking for information about how to calculate the dynamic unbalance of a wheel/tire. My idea is to develop a DIY balancing machine. I'm a electronics engineer and software developer but don't have any clue about the theory of this kind of measurement.

Thank you all

RE: Tire balancing calculation


All operations are complex math, TF is a measured transfer function between unbalance in one plane and vibration in another, UB is the unbalance, vib is the vibration measured at two places A and B, usually but not necessarily close to the unbalance planes 1 and 2



Greg Locock

RE: Tire balancing calculation

Dear Greg Locock

Thanks for your explanation but it's still obscure to me. Can you give me a pratical example or point me to documentation specificaly on this subject? I've read about rotor unbalance and vibrations of shaft bearing systems but as I don't have a background on mechanics, I couldn't follow the theory.

Thanks in advance


RE: Tire balancing calculation

I forgot to say that I'm not developing a comercial balancer. My ideia is to create a home-made balancer and publish the plans on the internet. I already made a 1 plane balancer for motorcycle wheels but the 2 planes (dynamic) necessary to car wheels/tire eludes me.
Thanks for any help.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close