What is a common cause of tire blowouts?

Excessive speed is a common cause of tire blowouts because driving at high speeds increases the heat generated by tire friction with the road. This heat can weaken the tire structure and lead to a failure, especially if the tires are not properly inflated or are already in poor condition. When a tire is subjected to excessive speed, it can rapidly degrade, and any pre-existing damage can escalate, resulting in a blowout.

In contrast, the other options are less relevant to tire blowouts. Low fuel levels do not affect tire integrity directly. Poor radio reception is unrelated to vehicle performance or tire condition. Inadequate cargo weight does not typically contribute to blowouts; however, overloading or unevenly distributed weight can create issues, but this is distinct from the effects of speed on tire health.