Calculate overall reduction
Overall crawl ratio–
Driveshaft turns–
General character–
A crawl ratio is not a capability score. Engine behavior, converter multiplication, tire size, traction, gearing strength, braking, and terrain all matter.
Formula and meaning
Multiply the transmission’s first-gear ratio by the transfer case’s low-range ratio and the axle ratio. The result describes ideal mechanical reduction between the engine and axle shafts.
Where the number meets history
Factory low range, axle availability, and transmission ratios changed across Jeep generations. The popularity of very low gearing also reflects the growth of technical recreational rock crawling.