The alignment people I talked to about this subject indicated that very few people complained about pull with alignment issues. What they did notice was that a lot of road behind them was visible in one side mirror and virtually none was visible in the other mirror. In other words, the coach was dogtracking down the road. Since the CD does not affect steering system position, the situation in the mirrors will not be different.
Surprisingly, a tire with low air pressure generally does not cause pull either. I hesitate to use the word always even though 5 out of the 5 vehicles tested did not pull even with extremely low pressure.
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To the engineer, the world is a toy box full of sub-optimized and feature-poor toys.
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