Gear Design Equations and Formulas Calculator

Automobile Car Truck

Solving For Effective Gear Ratio

Effective Gear Ratio

old tire diameter
new tire diameter
gear ratio


old tire diameter
= 0
= 0
new tire diameter
= 0
= 0
gear ratio
= 0
= 0


effective gear ratio

Other Units:

Change Equation
Select an equation to solve for a different unknown

speed speed
rotation velocity rotation velocity
gear ratio gear ratio
tire size - radius tire size - radius
effective gear ratio effective gear ratio
tire size - diameter tire size - diameter
crawl ratio crawl ratio

speed  =  MPH - miles per hour
tire radius, tire diameter, rim diameter  =  inches 
gear ratio  =  if ring and pinion ratio is 4.10:1 use 4.10 
rotation velocity  =  RPM - revolutions per minute 
effective gear ratio  =  determine new gear ratio after a tire size change
crawl ratio  = 

four wheel drive rear axle differential, transfer
case low range and transmission ratios

section width  =  millimeters
aspect ratio  =  unitless

References - Books:

See 3 and 4 on reference page

Popular Pages:

Site Links:

Web Apps, Rich Internet Application, Technical Tools, Specifications, How to Guides, Training, Applications, Examples, Tutorials, Reviews, Answers, Test Review Resources, Analysis, Homework Solutions, Help, Data and Information for Engineers, Technicians, Teachers, Tutors, Researchers, K-12 Education, College and High School Students, Science Fair Projects and Scientists


Privacy Policy, Disclaimer and Terms

Copyright 2002-2015