Tire Size Calculator

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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.

 






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Thrandur
4x4OffRoads.com