Will a speedometer calibration help me in court?

Speedometer-Calibration
Is your speedometer working properly?

Having a problem with your speedometer not reading accurately and having trouble recalibrating it yourself? Did you get a ticket for speeding or may be charged with reckless driving when you know that you were abiding by the speed limit, then don’t worry there are many local shops that can help? Having a working speedometer is very important because you want to know exactly how fast you are going.

There are many shops out there that can help with speedometer calibration, but the question is which is the best one for you. You always want to look for one that is certified and know what they are doing. You want to find a calibration service that is highly accurate and offer a quick turnaround. Speedometer calibration cost will depend on where you take your vehicle. Most speedometer calibrations will cost about $50-100 but some shops may charge more. The professional mechanic will measure the different speed intervals by attaching a dynamometer to your vehicle which will measure the power output of an engine. They will first measure it at different speed intervals and then they will record any differences between your vehicle’s speedometer reading and the correct speed. If a place gives you a certificate that is 100 percent accurate at every speed be very skeptical because there should be some variation, even if it’s small.

Any great traffic lawyer knows where to get a speedometer calibration done, so talk to them before finding your own shop. Some courts will advise you to get one done, but some courts will use it as weak evidence, make sure who your judge is and if they will use it as credible evidence. Speedometer calibration certificates can or may not be helpful. If your speedometer reads HIGHER than the actual speed that doesn’t help you in any way. If your speedometer reads LOWER than the actual speed, it may help. Speedometer calibrations are usually helpful to make your punishment less severe. It can also help take a reckless driving charge or speeding ticket to nonmoving violations.

If are not sure if your speedometer is reading correctly then go to a company like Safety Restore, they have professional technicians that can help with getting your speedometer to read correctly again. Safety Restore will get your vehicle in and out of the shop in no time and save you lots of your time and money. Call them and have your speedometer calibration done today.

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.

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