I had my tires balanced at les schwab and they either overtightened the lug nuts or didn't torque them properly ie impact wrench. My left rear wheel was shaking badly, luckily I was near a parking lot and not on the freeway, and pulled in. I looked, and to my dismay one lugnut was left holding the wheel on. I called them they took care of everything, but what could have happened scares me the most.
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