California CDL Class A Practice Exam 2025 – Your Comprehensive All-in-One Guide to Success!

The requirement for dual tires during an inspection is that they shouldn't be in contact with each other. This is crucial because dual tires are designed to work together to provide better load support, traction, and stability. However, if the tires are in contact, it can result in uneven wear, overheating, and potential tire failure. The air between the tires allows them to flex independently, which enhances performance and safety by reducing the risk of one tire taking on too much load.

Additionally, maintaining a gap between dual tires helps to ensure that any debris or particulates that might get caught can be cleared out, preventing damage. Proper spacing also aids in the thermal regulation of the tires, reducing the likelihood of overheating due to friction.

Choices about them touching each other or having a minimum width do not reflect best practices for tire maintenance, while balanced pressure is indeed important for overall tire health but does not specifically address the requirement regarding their contact. Therefore, ensuring that dual tires do not contact one another is fundamental for safe operation and predicated on these principles of tire functionality and wear.