Many people have difficulties with calibrating the speedometer on their vehicle once larger tires are installed.  With this issue at hand, many turn to the “Jet Accu-Speed” product to correctly calibrate the vehicle’s speedometer with the actual speed.  First off, when a vehicle’s tire size changes, the computer does not send the right information to the speedometer because the computer is set to record revolutions per minute (rpm) on the stock tire size. Once larger tires are installed, the vehicle will have less rpm due to the larger tire rotating at the same speed as the smaller tire resulting in the speedometer displaying the wrong mph.  With installing the “Jet Accu-Speed” product, one can fix the rpm reading and set the computer and speedometer to show the correct speed when driving.
 
 The “Jet Accu-Speed” can be installed quickly and easily by anyone with basic mechanical skills and can be purchased at http://www.motorweb.com.  The “Jet Accu-Speed” replaces the need to change out your speedo gears and is less of a hassle to replace/maintain.