Main Menu Vehicle Trails Mechanicals TJ/LJ Mods JK Mods Gallery
Engine Speed Calculator

Engine Speed Calculator

This chart is designed to show how different size tires and/ or gear ratio's effect engine RPM's. Start by entering your Speed, Transmission Ratio, and Transfer Case Ratio in the Yellow blocks. One final block is in the chart for any Gear Ratio's not listed. If you don't know your tire size because it is metric or just want to do a simple calculation look at the bottom of the page for additional calculators.

Engine Speed Calculator

Metric Tire Conversion Calculator

This page last updated: 16-Apr-2008

Content and Design © 2002-present WanderingTrail,  Ron Seegert
Common Sense and Safety should always be observed when working on your vehicle or doing modifications. Jackstands, wheel blocks, disconnecting the battery are a few of the basic safety precautions that should be used and may not be mentioned in the write ups on this site. You are responsible for your own installation, these write ups are a helpful guideline and should not be taken as an official installation instruction. My write up may be different from the kits currently out there, so alwasy double check the manufacturers installation instructions when installing anything. I try to keep the site up to date with changes that have occured as I discover them, but may not have the latest unless someone lets me know. If you feel that an install is above your capabilities after reading my write ups, I recommend getting together with a club and getting some help. Only a few times have I needed to employe some actual help from a shop to get something done. Usually welding or A/C work.
All trademarked names & logos are property of their respective owners
This site is in no way associated with Daimler-Chrysler
Jeep is a registered trademark of Daimler-Chrysler