Tire Tread Depth Gauge Keychain – Black

A perfect gadget not only for tire technicians but also for everyday drivers. The gauge features a clear scale from 1 to 20 mm, marked at 1 mm increments. It also highlights key reference values:

• 4 mm (recommended tread depth for winter tires)
• 1.6 mm (legally minimum allowed tread depth)

All in the form of an elegant black keychain. It’s unobtrusive, won’t get lost, and is always at hand when you need it.

What else should you know?

Guidelines for correct tread depth measurement:

• Measure the depth of the grooves in the central part of the tread.
• Take three measurements along the same groove at roughly equal intervals to check for even wear across the tire surface.
• Press the tip of the gauge to the bottom of the groove and read the value from the scale.
• Also check the depth of the side grooves; uneven wear may indicate improper wheel alignment.

Important facts:

• The legally required minimum tread depth in Poland is 1.6 mm. Driving on tires below this depth can result in a fine and vehicle registration suspension.
• Tire manufacturers recommend replacing tires at 3 mm for summer tires and 4 mm for winter tires for safety reasons.
• Driving on worn tires significantly reduces grip and increases the risk of aquaplaning (hydroplaning).