Tire Measurement Averaging Tool
Average multiple tread depth measurements into one cleaner current average tread depth value.
Safety first
If the tire is measured while still on the vehicle, only lift the vehicle using manufacturer-approved jacking points, support it with properly rated jack stands, work on a level surface, chock the wheels that remain on the ground, and never rely on a jack alone.
Measure only what can be done safely. One position is better than guessing. A second position can help catch obvious uneven wear when it can be measured safely.
Average tread depth measurements
Select the measurement unit, number of tread grooves, and one or two measurement positions around the tire. Enter only actual tread depth measurements taken with a tread depth gauge.
How to enter data: Use only the grooves that actually exist on the tire. The maximum is 8 grooves and 2 positions, for up to 16 measurements.
Important measurement and safety disclaimer
This tool only averages user-entered tread depth measurements. It does not determine whether a tire is legal, safe, roadworthy, properly inflated, correctly loaded, repairable, or acceptable for continued use.
Tread depth readings can vary based on gauge quality, gauge angle, groove selection, measurement location, tire wear pattern, tire damage, road debris, tire construction, and user technique. Use a proper tire tread depth gauge and follow the gauge manufacturer’s instructions.
If a tire shows cracking, bulges, exposed cords, punctures, severe irregular wear, sidewall damage, or any condition that may affect serviceability, have it inspected by a qualified tire professional before continued use.