Tire Size Calculator

4x4 Off Roads Buyers Guide FREE VIDEO: 4x4 Off Roads Buyers Guide
In this video series - the 4x4 Off Roads Buyers Guide you will discover how to select your 4x4, how to evaluate off roading trucks and SUVs and how to find them on eBay - and do it all with confidence!

Tire Size Calculator helps in your decision making while planning modifications for your newest project.

Bookmark this page for easy reference!


Tire Size

Cross section width   Aspect ratio   Wheel diameter   Inches
  R =

Converting from metric tire size to the more common inches used in those larger 4-wheeling tires can be handy.





New Gear Ratio

New tire size (inch)   Old gear ratio   Old tire size (inch)   New gear ratio
x / =

When you get larger tires you have to lower the gear ratio to preserve fuel consumption. This 4x4 Calculator can help you to find the ration closest to the original setup.

 

Overall Crawl Ratio

Transmission ratio   Transfer case ratio   Axle ratio   Overall Ratio
x x =

High overall crawl ratio means you can go slower - that transforms into better off road capabilities.

 






Share your 4x4!
Email

Name

And

Don't worry -- your e-mail address is totally secure.
I promise to use it only to send you Head Off Road Newsletter.

Stay in touch and get more free 4x4 truck stuff!
4x4 Trucks & SUVs Buyers Guide
4x4 Buyers Guide

Thrandur
4x4OffRoads.com