What type of tool is commonly used to tighten lug nuts on a tire?

An impact wrench is a powerful tool specifically designed for tightening and loosening fasteners such as lug nuts. It delivers a high torque output and is particularly useful for tasks that require a considerable amount of force, like securing lug nuts on a tire. The impact mechanism of the wrench allows it to effectively handle the stubbornness of rusty or overtightened nuts, making the job quicker and more efficient.

In contrast, while a ratchet wrench can also be used to tighten lug nuts, it typically requires more manual effort and may not provide the same level of torque as an impact wrench. A pneumatic drill, primarily used for drilling purposes, is not designed for tightening fasteners, and a screwdriver is meant for screws, not lug nuts. Therefore, the impact wrench stands out as the ideal and most effective tool for this specific application.