Features: 1.Why We Need This: Tread is the rubber on the tire that touches the road.If it's not deep enough, your car loses traction and suffers extended braking times. To ensure your safety, measure the tread depth as part of your regular vehicle maintenance. 2.Universal: Suitable for everyone to measure the depth of tire, no experience or special skills are required. Suitable for various tires of vehicles, like cars, pickups, bikes and motorbike, etc. 3.High Accuracy: This gauge measures in increments of 1/10 mm (0.1mm). With clear and round dial, the dial has 1.7in (44cm) diameter. No difficulty reading data. .