How To Do Speedometer Calibration

How To Do Speedometer Calibration

Imagine driving down the road, and you are pulled over for going over the speed limit. However, your vehicle was telling you that you were driving at the correct speed. This may be due to your vehicles speedometer calibration. If you have recently changed a stock part on your vehicle, such as the tires, the calibration may be off, resulting in the vehicle giving you a different reading. For example, switching to larger tires may give you a slower speed reading (which would be the case of you being pulled over for speeding). Smaller tires would give you a faster reading. In this case, you would need to learn how to do speedometer calibration.

If you have an electric speedometer, the process is simple. All you need to do is determine the distance your vehicle has to drive in order to properly calibrate. This number can be found in the vehicles supporting documents. Press the calibration button which is located on the speedometer, start the vehicle, and then release that button. Press the button again and go on the test drive. Once you have driven the required distance, press the button once more and speedometer will calibrate itself.

After you know to do speedometer calibration, but you notice that it is still not giving you the correct reading, or the gauge is not working, the speedometer may need to get repaired. Safety Restore is a post accident restoration company that can help with your speedometer repair. Safety Restore can help rebuilding tachometer gauge, oil gauge repair, temperature gauge repair, gas gauge repair, and the car odometer repair. They can fix it all! Simply send them your cluster and you can save up to $600 as compared to buying a new one at the dealer. Safety Restore will repair and ship back your item within 24 hours of receiving it. Visit SafetyRestore.com to learn more how they can help you get back on the road driving safely.

How to Change Speedometer Calibration

How to Change Speedometer Calibration

A vehicle’s speedometer is in charge of giving an accurate estimation of the speed it is driving. When buying a car from a dealer, the speedometer is adjusted, or calibrated to the vehicle’s stock parts. If the owner decides to change the stock parts, such as the vehicle’s tires, it can throw of the speedometers calibration, giving the driver the wrong reading for the vehicle’s speed. Switching to larger tires causes the speedometer to give off a slower speed reading than the vehicle’s actual speed. Similarly, switching to smaller tires causes the speedometer to give a faster reading for the vehicle’s speed. After the tires are changed, the speedometer needs to be recalibrated. Here are a few simple steps on how to change speedometer calibration for a mechanical or electrical speedometer.

If you have a mechanical speedometer you would start by opening the vehicle’s hood and locating the transmission. Next, unscrew the speedometer cable and unscrew the bolt holding the gear housing cover. After removing the plate, you will see two gears. Count the number of teeth the gears have and remember it for later. Next, get the diameter of the tire and divide 20,168 by the tire’s diameter. This is the tire’s revolutions per mile. Multiply this by the amount of teeth your gears have and multiply again by the vehicle’s axle ratio (which can be found in the vehicles supporting documents). Purchase the necessary driven gear for your vehicle. Remove the old driven gear by pulling it out of its clips and clip in the new driven gear. Secure the gear housing cover and the speedometer cable back.

If you have an electric speedometer you would start by determining the distance of the test drive you would need to recalibrate your speedometer, which can be found in the vehicles supporting documents. Press and hold the calibration button located on the speedometer, start the vehicle and then release the button. Press that button again and then take the test drive. Once you have driven the distance needed, press the button once more and the speedometer will calibrate itself to accommodate the new tire size.
Now that you know how to change speedometer calibration, you can get those new tires you have been eyeing.

Need help with speedometer calibration? View our services here.

What is speedometer calibration ?

What is speedometer calibration ?

The vehicles cluster, is also referred to as the vehicle’s speedometer. It displays the tachometer gauge, odometer gauge, gas/fuel, gauge, temperature gauge, as well as transmission gauge. If you notice that there may be an issue with the speedometer like it giving incorrect reading, sticking, fluttering, or just not working, then you may need to get the speedometer repair or calibrated. What is speedometer calibration?


A speedometer is calibrated to ensure that the magnetic field torque reads and displays the correct speed of the vehicle. It takes into account the gear ratio of the drive cable, the tires diameter, as well as the drive ratio in the differential. If any of these are changed, the speedometer needs to be calibrated for those changes. The easiest way to calibrate the speedometer is to modify the magnetic field’s strength. This is done by using an electromagnet to adjust to match the input from the device’s drive cable.

Safety Restore can help you in your question “what is speedometer calibration?’ and “How do I go about getting my speedometer calibrated?” Safety Restore specializes in post accident repair as well as cluster repair. Safety Restore can help rebuilding tachometer gauge, oil gauge repair, temperature gauge repair, gas gauge repair, and car odometer repair. They can fix it all! Instead of going to a dealer, visit SafetyRestore.com to save hundreds of dollars on this service. For only $118.99, Safety Restore will repair your cluster using 100% OEM parts and with a lifetime guarantee. Aside from saving you money, they can also save you time with their 24 hour turnaround. The companies skilled engineers repair all parts to meet FMVSS standards as well. Leave the work to a BBB accredited company and then enjoy the drive in your like new speedometer.

Car Speedometer Calibration

Get car speedometer calibration by mailing in your instrument cluster today and get 24 hour turnaround!

Driving with a speedometer all your life, you may know the basics of what it does and shows. However, you may not know the various components of the gauge, or how it came to be in the first place.

The speedometer, or speed meter, on a vehicle is defined as an instrument that measures and then displays the immediate speed of a vehicle. Speedometers are now universally installed in all automobiles, but this was not always so. They became available in the 1900s, and became standard equipment right around 1910. Different types of machinery have specific names for the speedometers they are equipped with. For example, on a boat the termination would be a pit log. An airspeed indicator is the term used to apply to aircraft.

A man named Charles Babbage is given the credit for creating an early prototype of the speedometer, which was intended for locomotives. In 1888, the electric speedometer was invented by a Croatian named Josip Belusic, and it was originally named a velocimeter. In 1902, a patent for a speedometer was created by a man named Otto Schultze.

The basic operation of the device is simple. The speedometer uses a rotating flexible cable that is usually driven by gears linked to the output of the transmission on the vehicle. When a vehicle is moving, a speedometer cable is turned by the speedometer gear assembly, which then turns the speedometer mechanism itself. A small permanent magnet that is attached to the speedometer cable works with a small aluminum cup that is fixed to the shaft of the pointer on the analogue speedometer instrument. The changing magnetic field creates eddy currents in the cup as the magnet rotates near the cup. The eddy currents on their own create another magnetic field. This results in the magnet exerting a torque on the cup, pulling it–and the speedometer pointer–in the direction of its rotation with no mechanical relationship between them.

When a speedometer stops working, a car speedometer calibration may be necessary. The company Safety Restore works with instrument clusters and speedometer gauges for all makes and models of vehicles. Whether the speedometer gauge is getting stuck or not working, the tachometer gauge is stuck, or the oil gauge is giving a wrong reading, the car speedometer calibration service by Safety Restore is able to help! This service also works for those whose temperature gauge is working intermittently, those who have dead or sticky gauges, or those who have gauges not working whatsoever! The car speedometer calibration service comes out to only $118.99, saving customers hundreds if not thousands of dollars they would have payed to get the same service at the dealer! Quality and safety are a guarantee, as well as a lifetime warranty! Get your car speedometer calibration at Safety Restore today!

Speedometer Calibration Cost

Speedometer Calibration Cost – $118.99

Speedometer calibration cost can range from hundreds, to even thousands of dollars depending on where you are searching. For that kind of money, many people choose to forego getting their speedometer recalibrated at all. If only they could hear about the company Safety Restore. Along with other services, Safety Restore specializes in instrument cluster gauges repair. The best thing about this service is its unbeatable price, especially when compared to the crazy prices at the dealer. With such affordable pricing, Safety Restore does not compromise safety or quality of its services in any way.

To perform speedometer recalibration, Safety Restore employs very experienced engineers. All defective parts on the cluster are replaced with only 100% OEM parts. When customers send in their instrument clusters to be fixed, they basically return to them brand new. All sticking, fluttering, and incorrectly reading gauges are repaired, and the broken motors controlling the arrow/needle are replaced. Any and all gauges-related issues are fixed. This includes everything from the transmission temperature gauge, oil gauge, battery gauge, gas/fuel gauge, tech gauge, speedometer gauge, and temperature gauge.

So why submit to an unspeakable speedometer calibration cost when you can turn to a company like Safety Restore and only pay a fraction of the price? The speedometer calibration cost of Safety Restore is quite affordable and the work is done in just 24 hours! Your instrument cluster will be returned to factory condition and you’ll be left with a lifetime warranty on top of it!

Order your instrument cluster gauges repair at Safety Restore today. Once you purchase the service online, send in your instrument cluster to Safety Restore in Westfield MA. Any preferred carrier can be used when shipping out. Once the company receives your package, it will only take 24 hours for the repairs to be completed and for you to be back on the road–with a properly functioning speedometer–again in no time!