What is the minimum tread depth for tires other than the front two?

The minimum tread depth for tires other than the front two should not be less than 2/32". This is an essential standard in the CDL regulations because adequate tread depth is critical for maintaining traction and preventing hydroplaning, especially in wet or slippery conditions.

Maintaining the right tread depth helps ensure that the vehicle can effectively grip the road, which is vital for safety during both normal driving and emergency situations. A tread depth of 2/32" is considered the legal minimum required to ensure basic traction and performance. Below this level, tires become significantly less effective, increasing the risk of accidents.

In contrast, the other tread depth options presented exceed the minimum requirement for non-front tires. While having deeper tread may improve traction and handling performance, the key takeaway is that 2/32" is the minimum threshold for ensuring that the tires are still considered safe and compliant. Proper understanding of these standards is important for any commercial driver to ensure safety on the road.