One of mine is bent.  They look like this.

how did you bend your wheel?  gettin all crazy in the grocery getter?

I dont know. It may have been bent from the time I got them.  Its only slightly bent and just causes a vibration on the highway that is more noticeable now with the bigger, heavier tires.  I havent hit them on anything particularly hard.  On the other hand, I dont kow what my wife does and the tire on that wheel broke a cord and got all wonky.  She may have done something she isnt telling me.