Jeep Jk Gear Chart. A forum community dedicated to Jeep Wrangler JK owners and enthusiasts. 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.
With automatic or manual transmissions If the ring and pinion and/or tire size has changed on your Jeep vehicle, then you will want to replace the factory speedometer gear with the corresponding gear on the chart below. After searching and talking to the people I came upon the understanding that nothing seemed to match. 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.
Our Ultimate Gear Package includes everything needed to regear front and rear axles.
Ring and pinion gears are designed to be set-up and run with exact tolerances.
Also, when making altering your factory gear ratio or wheel size your speedometer and odometer may read incorrect. 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. You will need to fill in the fields based on your desired setup.