Same concept of loosening the valve stems but higher chance of them having to pay for new tires and less risk of getting caught in the act. These days I have become much more passive aggressive due to the nature of peopleWhat's the logic here? Like you said, they could get a screw stuck in a tire anywhere. Seems like that would be assuming they're smart enough to realize 'where' they picked it up so they'll avoid that area?. Car guys might pay attention to sh*t like that but most everyone else? Me thinks not so much.