Originally Posted by
Road Fan
...if the frame rear triangle is out of alignment, the rear wheel plane might not fall in teh plane of the front triangle. Assuming teh front triangle is not twisted, the fork is aligned, and the front wheel has no dish, you might want to dish the rear wheel off to one side to make the bike ride neutrally.
I would think the way to fix this is to have the frame aligned rather than compensate with wheel dishing.
If you have more than one wheelset (e.g. one set for training, another for competition) they'd both have to be dished to compensate for the poor frame alignment, and if you have other frames, you wouldn't be able to use the compensated wheels on them.
In other words, it's better to treat the disease rather than just the symptoms.
My $.02.