问：轮胎的内边缘磨损太快

6月，我将所有的四个轮胎更换。他们中的三个穿着不均匀，线程亮相。这是以前发生的，那里有多个轮胎磨损且不均匀。无论如何，不​​久前，我更换了所有轮胎，并保持了对齐。我抱怨我的轮胎穿着不均匀，需要在不到10,000英里的时间内更换。机械师告诉我，我需要更频繁地旋转轮胎。他继续前进，旋转了我的轮胎，而没有提及任何与众不同的东西。好吧，今天，我正去旋转轮胎，并得到了平坦的旋转。在路边花了太长时间，并努力工作以使剥落的螺母掉了下来后，我把手剪在螺纹上 - 它们再次暴露了。我很好奇，立即检查了另一侧。 The threads on that side were showing again as well. I purchased a road hazard warranty on the last set of tires, but the mechanic this time said he doesn't think it'll cover me this time - there were no hazards on the road. He assured me they would double-check the alignment while my car was in, as well as some other stuff. I'm taking it in tomorrow. Don't auto shops check other basic things while they're doing the alignment? So I know what to expect, what else might be wrong with my tires or car?