Nothing cries helplessness like a girl on the highway shoulder with a flat tire—the classic roadside damsel-in-distress. Changing a tire isn't rocket science, but it's just not a skill in the proper girl's arsenal. In fact, it's scandalous.

Think about it: She must get down in the dirt, squatting in a most unladylike manner as she pumps or twists a gizmo in a repetitive motion to jack up the vehicle, fingers black with grease as she cups the suggestive lug nuts. Could it be more sexual?

But yesterday's shocking roadside erotica is today's empowered turn-on. For all the reasons above, a reasonably attractive woman installing the spare is a beautiful sight to see. Here are 30 photos of hot girls changing tires.