A tire that starts with 10/32" of original tread depth has 12.5% wear for every 1/32" that is worn away, and a tire that starts with 12/32" " of original tread depth, has 10% wear for every 1/32" that is worn away, etc.
Penny test for tires – how to measure tread depth. You may have heard of the penny test for tire tread depth and wondered if it’s something a layperson can manage, and a reliable test and indication of tire tread depth.
(Lea en español) While U.S. coins can be used to estimate remaining tread depth as a tire approaches the end of its useful life, the established method of measuring remaining tread depth in the U.S. is with a gauge that reads in 32nds of an inch (other countries measure tread depth in millimeters).
In most states, legal tire tread depth is 2/32 of an inch, which is the exact distance from the tip of Abe’s head to the edge of the penny. Keep in mind that even if your tires pass the Lincoln penny test, you may want to consider buying new tires before the 2/32” rule kicks in. Tires with low treads make hydroplaning on rain-soaked roads more likely and significantly reduce traction in snow.
Doing a routine tire inspection is a good way to ensure your tires are safe and at peak performance. Learn how to inspect your tires for wear using just a simple penny.
Honda: How to Check Your Tire Tread. Tread depth determines the performance and safety of your Honda Accord or Civic. Take a few minutes to perform this important inspection, and this guide will help you along the way.
VOLUME 2 ISSUE 2 FEBRUARY 2008 COMMERCIAL FLEET TIRE DIGEST Tire Tread Depths - How to Measure & Why its Important
Replace your tires if the tread bar is flush with the tire tread. All tires sold in the U.S. and most other countries have tread wear bars—small horizontal bridges that form between your treads at a lower depth.
Safe When New. Safe When Worn. Even when half-worn, it's still safe, thanks to EverGrip wet-braking technology. The MICHELIN® Premier® A/S tire still stops shorter on wet roads than leading competitors’ brand-new tires.
He was he told that the new tires had to go on the rear if there was a “significant” difference in the tread depth of the new tires compared to the old ones.