TIRE TECH: Measuring Tire Tread Depth with a Coin
- June 27, 2015
- Car Care
- Posted by Chad Baus
- Comments Off on TIRE TECH: Measuring Tire Tread Depth with a Coin
According to most states’ laws, tires are legally worn out when they have worn down to 2/32″ of remaining tread depth. To help warn drivers that their tires have reached that point, tires sold in North America are required to have indicators molded into their tread design called “wear bars” which run across their tread pattern from their outside shoulder to inside shoulder. Wear bars are designed to visually connect the elements of the tire’s tread pattern and warn drivers when their tires no longer meet minimum tread depth requirements.