How can you tell if a half shaft is bad?

You can tell if a half shaft is bad by listening for clicking or popping noises when turning, which indicates worn or damaged joints. Additionally, if you notice excessive vibration or a noticeable increase in play in the wheel, it may be a sign of a failing half shaft. Visual inspections can also reveal torn or leaking CV boots, which often precede joint failure. If you experience any of these symptoms, it's advisable to have the half shaft inspected or replaced.