Your local Jeep dealership will be able to order the necessary part for you called a speedometer drive gear. This small plastic gear should cost around $10-20.? The install should cost you nothing since it requires one hand tool and about 10 minutes of your time.

Here is a list of common gear/tire combinations that should help you find what gear is right for you:

All Cherokee's came with 28" or 29" tires depending on the package.

First step is to go to the drivers side of your Cherokee and crawl under the rear door.? You will easily locate the rear driveshaft that connects the transfer case to the rear axle.? Now the gear that we will be changing is in the transfer case.? You will see a wire loom that plugs into the rear upper part of the transfer case - this wire loom feeds the vehicles computer the rotational speed of the output shaft and that, along with other information, is used to compute your speed.

You may wish to verify that you have made the correct adjustment.? This is easily accomplished at the highway.? Find a mile marker (they are spaced one mile apart) while traveling at 60 MPH and time the distance between mile markers.? At 60 MPH you are travelling one mile per minute so you should be right at 60 seconds between mile markers.