Perhaps someone can give me a quick answer to this question...

My wheels don't rotate perfectly -- as I imagine is the case with many cycle's wheels after they've been put on the road for a good, solid set of outings. But, one only notices this when they're paying close attention to the rotation of the wheel. Additionally, there's no rub of the wheel (either front or back) against the brake pads whatsoever.

That said -- is it time to get the wheels trued based on these slight deviations, or is that more on the order of an annual thing?