Jeep Speedo Gear Chart

Jeep Speedo Gear Chart – Speedometer teeth = 270.29 × axle gear ratio. It's all by itself and as far as i know, there are no proper speedo drive gears available. 7 rows the chart below show the mating driven gears. Simply select the proper chart then configuration of your vehicle from the chart.

First, determine your original gear ratio. Make the change to a different. I went through this already. To arrive at a correct jeep® part number add the tooth count for the speedometer gear to the end of 520676.

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. I have a 1999, tj with 4.0,. A 1987 yj transfer case is a np207.

It has been gps verified with all the shown. This chart is known to be accurate and it indicates a 31 tooth is the correct choice for 33 tires and a 3.73 axle ratio. If you change to a larger tire size from the factory size then you will alter your speedometer reading and vehicle mileage.

Any time you install larger tires and/or new gears, your speedometer and odometer will need to be recalibrated so they read correctly with your new setup. Rugged ridge long speedometer gear for 55. Gear ratio & tire size chart considering making modifications to your jeep?

I’m sorry to post this, but all the threads i have found provide links to pages and charts that are gone! Most of their recommendations have been gps verified and those that aren’t are right between those. Well, to answer that question, we’ve developed this chart to help you select the optimum gear ratio for your desired tire size.

Dana 300 Speedo Gear Selection Jeep Enthusiast Forums