What tool is commonly used to measure tire tread depth?

The tool commonly used to measure tire tread depth is the tread depth gauge. This specialized instrument is designed specifically to provide accurate readings of tire tread wear, ensuring that the depth is within safe limits for optimal performance and safety.

Tread depth gauges typically feature a simple design that allows users to easily insert the probe into the tread grooves and read the depth on a scale, which is essential for determining whether a tire needs to be replaced due to excessive wear. Regularly checking tread depth helps in assessing traction capabilities, especially in wet or slippery conditions, making it a crucial part of tire maintenance.

Other tools like a pressure gauge, which measures tire pressure, or calipers, which can measure dimensions but may not be as suited for measuring tread depth specifically, do not serve the same purpose as a tread depth gauge. A measuring tape could be used in a pinch to estimate depth but is less precise and practical for this specific task compared to a dedicated tread depth gauge.