Posted by on 5th August 2020

How to Calibrate Jeep Speedometer and Odometer

A bit of vital information to do this on the cheap, the low cost way to fix you ride’s Odometer and Calibrate Jeep Speedometer for more accurate data about your overlanding trips. So I made the quick video below to show how easy it was. Here is the video Link so you can see how easy it was.

For bigger tyres 32″ BF Goodrich Mud Terrain KM Calibrate Jeep Speedometer

Calibrate Jeep Speedometer. For the Jeep Grand Cherokee WK or Commander XK 2005-2010, or practically all Jeeps since 2005. JK, JL, JT, WK2, KK, MK. Plus all Chrysler models, plus all Dodge models and all Ram models. How to calibrate the speedometer and odometer, trip recorder etc for bigger tyres. This will even do Export models as well, like the WH, XH that have bigger tyres 255/75/17. 

Finally been able to do this been waiting 3 years! I used the Vgate adaptor, the OBD JScan Android app and my Android phone, for a cost of £30 in around 2 minutes. That’s after being told by countless tecchies, that this could not be done on a WH Export model! It can!! Jeep WK – WH speedo wheel tire size height correction or tyre calibration from 29.5″ tyres to 32″.

Plus I now have a single VIN licence for other tweaks that I may need to do to my Jeep in the future. It will go up to 40 inch tyres. Change your tyre size to 32″ and your speedo will be approx 10% out. This is how to correct the setting. It takes 2 minutes and costs £30 or $35 for the all equipment and tools needed plus your phone.


The testing

After doing this I drove 169 miles to test it out. With a revised tyre size setting made at 32 inches, the following results were observed. Cross checking my journeys with Google maps showed my Jeep had only covered 166 miles. So the calibation is around 1.8% out on distance travelled. This is what gives you gas or fuel mileage or economy measure. So not bad. The speedometer is close to stock, where at a shown speed of 65mph, you are actually going 61mph. This is normal. Calibrate Jeep Speedometer and get accurate distance measurements.

Common wheel heights for Jeeps

235/65R17 – 29.02 tall
245/65R17 – 29.5″ tall
265/70R17 – 31.6″ tall
255/75R17 – 32.06″ tall
285/70R17 – 32.7″ tall
285/75R17 – 33.83″ tall

How I found the answer to the Calibrate Jeep Speedometer problem


OBD JScan Jeep App Calibrate Jeep Speedometer


OBD JScan Jeep App Calibrate Speedometer


OBD JScan Jeep App Calibrate Jeep Speedometer


OBD JScan Jeep App Jeep Speedometer


OBD JScan Jeep App Calibrate Jeep Speedometer


OBD JScan Jeep App Calibrate Jeep Speedometer



What I offer in my shop. Repair kits and T'shirts. If you’re a long suffering; buddy, brother, sister, friend, wife, girlfriend, husband, boyfriend, father, uncle, aunt, grandparent, or mother, of a car nut, be it classic muscle car, Jeep 4x4, or off-road truck driver, the above link is the place to get them something nice and long lasting, for their; birthday, anniversary or Christmas! Without costing you too much money. If you have a question email Loz here

Laurence Dunn

Lozs Cool Rides T shirts last for years and 100s of washes, they still look good thanks to high quality Silk Screen Printing. My 45 years of professional Print experience helps!


Ford Freestyle Radio Repair and Shaker 500 or 1000, Ford Expedition, F150, F250, F350, Ford Explorer, Ford Taurus, Ford Focus, Ford Fusion and Mercury Milan

Extreme Jeep Wrangler Off-Roading in Chambon FRANCE

How to disable MDS Mopar HEMI Multi-Displacement-System on Jeep, Chrysler, Dodge & Ram without tuner

WK Heated Seat Button Repair, Jeep Grand Cherokee 2005

How to fit low cost Fender Flares on WK WH Jeep Grand Cherokee 2005 2006 2007 2008 2009 2010 years

K&N Cold Air Intake + Magnaflow

WK XK Information Center

Repair leather seat Jeep 2005 WK

WK WH headlight assembly

ORT graphic Grand Cherokee 2005 2006 2007 2008 2009 2010 WK

Mustang GT MUFFLER DELETE Review with Pypes long tube headers, cat-back X-pipe & Pypes bombs in full

Mustang Owners Club Nationals 2022

Long Tube Headers X-pipe & Pypes Bombs idle launch & warm start Ford Mustang GT/CS 2007 4.6, Part 1

Which MDS Solenoid is best for my HEMI engine?

Mustang drive local and big roads

Ace Cafe London Mustang Day September 2023

Southend City seafront drive back