Which of the following is NOT a tire issue commonly faced in aviation?

Water accumulation is not considered a typical tire issue in aviation because it does not directly relate to the tire's structural integrity or performance in the same way that the other options do.

Under inflation can lead to increased wear and heat build-up, potentially resulting in tire failure. Excessive tread wear indicates that the tire has been used beyond its safe lifespan, reducing traction and increasing the chance of blowouts. Under pressure refers to a condition where the tire does not have enough air, which similarly affects performance and safety. Collectively, these issues are critical to a tire's functionality and are directly monitored by aviation safety protocols.

In contrast, while water can accumulate in various parts of an aircraft, it primarily affects components like the airframe and control surfaces rather than the tires themselves. Thus, water accumulation does not fit the category of common tire-related issues in aviation.