My rear rim has a slight bend on one side of the braking surface, probably from hitting a pothole with too low tire pressure. I do not notice it when riding, and the tire is seated just fine. I only notice it when using the rear brake, which I rarely use. I happened to find it while putting on my trainer tire.
My question is: how bad does a bend need to be to compromise the structure of the wheel? Would it be worse to try to straighten it, given that this would weaken the metal even further, and maybe even crack it? If it doesn't bother me, is it really an issue?