VANFN TIRE TREAD DEPTH GAUGE:\r\nA professional portable vehicle tool worth having.\r\n\r\nIt\'s recommended that you check your tire tread every 3,000 miles or once a month. Inspect your tires for uneven tread wear, cuts, cracks, bulges, foreign objects, or other wear or damage. Because as tires wear, their mass can get unevenly distributed, and the original rim/tire balance may be affected.\r\n\r\nHOW TO USE:\r\n1. Push the measuring scale into the gauge as far as it will go.\r\n2. Place the probe into the center of a circumferential tire groove and push down on the gauge\'s base.\r\n3. Carefully remove gauge by holding its barrel (without touching the probe) and confirm the tread depth reading.\r\n4. Place the probe into additional locations around the central circumferential tire groove at least 15 inches apart and repeat.\r\n5. Place the probe into the inner and outer circumferential grooves and repeat.\r\n6. Average all readings.\r\n7. Identify the percentage of tire wear by confirming the tire\'s original/new tread depth in its specs compared to the remaining tread depth just measured.\r\n\r\nPLEASE NOTICE:\r\nTo avoid potential problems, have your tires checked at a professional tire repair center if uneven tire wear is identified or you notice any of these common wear patterns:\r\n1. Wear on both edges (Underinflation).\r\n2. Wear in center (Over Inflation).\r\n3. Cups or dips in the tread (Worn Parts).\r\n4. Sawtooth edges (Misalignment).\r\n\r\nABOUT OUR SERVICES:\r\nWelcome to VanFnShop, 100 % Satisfaction Guaranteed. If You Have Any Questions About The Product You Got, Please Feel Free To Contact Us, We Will Try Our Best To Solve The Problem For You.