You're just now finding that the wheels are bent, AFTER OWNING THEM FOR TWO YEARS?
IMO, you're pizzin' in the wind. After 2 years, you're going to have a difficult time proving that the bend is due to a defect in the manufacturing, and not due to an outside source...
I had a similar problem years back. Mine turned out to be an unballanced drive shaft. The faster I drove the worse the vibration was. Have you checked to see that the balance weights are still on your shaft.
This may or may not be part of your vibration problem.
As far as your rims are concerned, I'll have top agree with the others. Your pretty much on your own after this much time.
Hope this helps.