Most US states require a minimum of 2/32 of an inch (approximately 1.6 mm) of tread. If you intend to drive on wet roads 4 mm may be the minimum tread depth needed to stop and steer effectively. Without at least this much tread the tire cannot move water away from the tread fast enough to maintain adequate traction. To drive with less tread is not illegal until you reach the legislated minimums, but it may not be safe.
In most parts of the USA it is 2/32 of an inch.
Standard passenger vehicle tires are required to have a minimum tread depth of 2/32 of an inch in most jurisdictions. This depth is crucial for maintaining traction, especially in wet conditions, as it allows for proper water drainage and reduces the risk of hydroplaning. However, many experts recommend replacing tires when tread depth reaches 4/32 of an inch to ensure optimal performance and safety. Regularly checking tire tread depth is essential for safe driving.
Minimum tread depth for all 4 tires is 2/32"
in Illinois it is 4/32 front tires and 2/32 all tires
It depends on the legislation of the country in question
Probably. However, it's best to stick with what the vehicle manufacture calls for on the door decal (driver's or passenger's door jamb).
It's not allowed. It is a violation of vehicle safety regulations. If you'd get caught out in rain they'd hydroplane real easily, that's why the law require a certain minimum tread depth.
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.
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.
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.
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.