Home Auto How to Recalibrate a Speedometer After a Tire Size Increase

How to Recalibrate a Speedometer After a Tire Size Increase

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A vehicle’s speedometer gives the driver an accurate estimation of the vehicle’s speed. The speedometers on stock vehicles are calibrated for use with the vehicle’s stock parts.

Changing the stock parts, including the vehicle’s tires, can throw off the speedometer calibration; larger tires cause the speedometer to read a speed slower than the vehicle’s actual speed while smaller tires cause the speedometer to read a speed faster than the vehicle’s actual speed. You may recalibrate a speedometer in a few simple steps.