How to Avoid False Readings on your Speedometer

As an inexperienced mechanic or driver, you most probably do not know that the size of your tire also affects how accurate your speedometer works. It is important to note that speedometers are normally calibrated for revolution using the recommended tire sizes. Remember, the speedometer is also attached to the transmission. Therefore, having a tire that is shorter or taller than the recommended size provides inaccurate readings on your speedometer.

This does not mean that you should not change your car’s tires, whether it is for performance or appearance reasons. However, you should ensure that your new tires feature the same circumference and total diameter as the original tires. For instance, if you install a bigger wheel then it should have a shorter sidewall to compensate for the differences in aspect ratio.

Visit our Dulles Motorcars at Leesburg, and learn how to change your tires for better ones without compromising on the information displayed on your speedometer.
Categories: Service