×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Automotive Engineering other topics FAQ

Standards

Sample Load Calculation by tireman9
Posted: 22 Aug 05

Sample Load Calculation US Tire & Rim Association

NOTE THERE ARE A NUMBER OF ADDITIONAL REQUIREMENTS THAT MUST BE CONSIDERED BEFORE THE LOADS CALCULATED CAN BE APPLIED. Some of these are the max vehicle speed capability. Is the tire size new or is it already in the existing tables? Is the tire to be placed on a passenger vehicle or a multipurpose vehicel. Is the Max vehicle GVW Less than 10,000 lbs and not to be used for any new design after 1/1/05, among others. So please remember this is only a general guide to provide a partila view of the complexities involved.

For 50 series aspect ratio and above.

L=K*P**0.5*Sd**1.39*(Dr+Sd)

L = load in Kg     round to nearest Load Index value for tires approved after 7/85

K = 6.67*10**-5  ( 50 through 80 series )

P = Inflation pressure in kPa

Sd = (0.34848 + 0.6497(A))*S70 (mm)

S70 is section on a 70% width rim

A = Aspect Ratio   = H/S70

Dr = Rim Diameter in mm  (Rim Dia * 25.4 rounded to nearest whole mm )

To convert load to pounds:
         Convert rounded calculated load in full Kg to closest 1 pound

To convert Inflation to Psi
         Convert kPa to closest 1 psi for intermediate pressure and to next highest psi for the Maximum pressure. (35 psi for standard load tires)



Back to Automotive Engineering other topics FAQ Index
Back to Automotive Engineering other topics Forum

My Archive


Resources

White Paper - A Guide to 3D Printing Materials
When it comes to using an FDM 3D printer effectively and efficiently, choosing the right material at the right time is essential. This 3D Printing Materials Guide will help give you and your team a basic understanding of some FDM 3D printing polymers and composites, their strengths and weaknesses, and when to use them. Download Now

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