I put a set of duratracs on a few months ago and they weren't balanced correctly. I brought it back a week alter and they said that it was fixed, but they still felt shaky when I sent over 50 - more that I think they should. I just got time to bring it to a local Firestone and they just called me and said that they balanced 3, but one of them was too hard and was asking for too much weight. I have the stock wheels on, but they are dipped black - not sure if that makes a difference because I dipped the wheels with the stock tires and the ride didn't change. Has anyone heard of the wheel being too hard to balance?