Federal rules set minimum tread depths: at least 4/32 of an inch on steer tires and 2/32 on other tires. Many carriers replace well before those limits.
For each tire, record
- Unit and position, such as steer left or drive axle 1 outer right.
- Brand and the date installed.
- Tread depth at each check, with the date.
Check regularly
Measure at least monthly, and look at wear patterns. Uneven wear points to alignment or inflation problems.
Our tire tread log flags tires near the limit.
General information, not legal, tax or financial advice.
This article is general information, not legal, tax or regulatory advice. Rules change; confirm current requirements with the responsible agency or a licensed professional.
