Jeep Jk Gear Chart. Expect sluggish performance, minimal overdrive use, and low elevation trails. About this Engine RPM / Tire Size chart: The following chart of Tire sizes and axle gear ratios are meant to give a general idea of the relationship between the differential gear ratio and the tire size and.
Hopefully this will help you to decide how best to regear your setup. Our Ultimate Gear Package includes everything needed to regear front and rear axles. The lists of available equipment will probably never be complete.
Here is a chart that shows optimal gear ratios for lifted Jeeps with larger tires.
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Hopefully this will help you to decide how best to regear your setup. If you wanted to swap out gears to match the tire change, you'd start with a calcluation like this: Old Gear Ratio * New Tire Size / Old Tire Size = New Gear Ratio. The charts I found ranged from very good to bad.