Minimum tread depth for all 4 tires is 2/32"
in Illinois it is 4/32 front tires and 2/32 all tires
In the United States, the tread has to be 4/32 (3.17mm) or more on the front tires and 2/32 (1.58mm) or more on the back tires. rear tires can be retreaded but not the front "steer" tires.
Per CAL FIRE guidelines, the minimum tread depth for the front tires of a fire engine is 4/32 of an inch. This ensures adequate traction and safety during emergency responses. Regular inspections are necessary to maintain compliance and optimal performance.
The minimum tread depth for semi-truck tires, as regulated by the Federal Motor Carrier Safety Administration (FMCSA), is 4/32 of an inch for steer tires and 2/32 of an inch for drive and trailer tires. However, many safety experts recommend replacing tires when tread depth reaches 5/32 of an inch to ensure optimal traction and safety, especially in wet conditions. Regularly checking and maintaining tire tread depth is crucial for safe operation.
The minimum tread depth for tires is typically 2/32 of an inch (1.6 mm) in the United States, which is the legal limit for safe driving. However, many experts recommend replacing tires when the tread depth reaches 4/32 of an inch (3.2 mm) to ensure optimal traction, especially in wet conditions. Using a penny or quarter can help gauge tread depth; if you can see the top of Lincoln's head or Washington's head, it's time for new tires.
In the United States, standard passenger vehicle tires are required to have a minimum tread depth of 2/32 of an inch. However, for optimal safety, many experts recommend replacing tires when the tread depth reaches 4/32 of an inch, especially in wet conditions. It's important to regularly check tire tread depth to ensure safe driving performance.
All tires on vehicles driven in Missouri must be safe. There is no listed minimum tiretread depth or mention of tire grooving in the laws.
4/32 on steer axle.2/32 on all others
2/32 of an inch in most parts of the USA. Local laws may vary.
In most parts of the USA it is 2/32 of an inch.
In Oregon there is no minimum thread depth, but just that Oregon requires that tires be in safe operating condition, without any bulges or exposed cords.