The car wheel balancer is a fast, efficient, and easy to use product that assists the tire balancer to accurately attach the counterweight. It effectively and accurately displays the position of the counterweight using infrared rays and has an auxiliary lighting function for professional and efficient operation. The device calculates the optical distance using the time from infrared emission to reception and obtains the straight-line distance from the infrared head to the pointing point. It is simple to use and realizes the automatic measurement of various tire parameters with accurate and easy operation. The device is equipped with a 18650 lithium battery, 1200mah, 3.7V, and has a working temperature range of -35°-65°. The fully charged device is available for 800 times.