NakedJeep.com

The digital garage of my 1998 Jeep Wrangler.

The Ultimate Crawl Ratio Calculator

View the results of endless combinations of transmissions, transfer cases, axles, and tire size combinations. In addition to the tires and gears, you can adjust the engine RPM to find your ultimate crawl ratio, or a balanced blend of on-road and off-road performance.

Vehicle Specifications

Transmission



1st:
2nd:
3rd:
4th:
5th:
6th:
Rev:

Change the Transmission gears to see changes in crawl ratio and speed.

Transfer Case



Lo:
Hi:

Change the Low Range and High Range gears to see changes in crawl ratio and speed.

Axles




Change the Axle Ratio to see changes in crawl ratio and speed.

Tires



Change the Tire Diameter to see changes in speed.


(Tire Circumference)

Engine RPM



Enter the engne RPM to see changes in speed.

Crawl Ratios / Speed

Lo-Range


Gear Crawl MPH
1st:
2nd:
3rd:
4th:
5th:
6th:
Rev:

Final Crawl Ratio



This is the vehicesl lowest total combined gear ratio

Hi-Range


Gear Crawl MPH
1st:
2nd:
3rd:
4th:
5th:
6t:h
Rev:
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