What should a driver inspect on all tires?

Inspecting all tires is crucial to ensure safe driving, especially for commercial drivers who transport hazardous materials. The correct approach involves checking various components of the tire, including the outer sidewall, tread, inner sidewall, and valve stem.

The outer sidewall should be inspected for cuts, abrasions, and other damage that might compromise the integrity of the tire. The tread is equally important because it provides the necessary grip on the road; checking for adequate tread depth can help prevent skidding or loss of control. The inner sidewall may show signs of wear or damage that are not visible from the outside. Lastly, inspecting the valve stem is important to prevent leaks that could lead to tire deflation. This thorough inspection ensures that each element of the tire is functioning well, maintaining safety and performance on the road.

Other options mentioned are incomplete; simply checking the tread depth, the outer sidewall only, or focusing just on the inner sidewall and rim would leave critical areas unmonitored, potentially leading to dangerous tire failures.