After having my z4 for about a year, I went to get new tires today (non-rft by the way). They told me at discount tire that I had 2 bent rims. The rims had been heavily balanced to compensate for the bends. This is the way the vehicle was when I purchased it from the dealer so it's obvious that they knew about the rim flaws. Discount tire said these rims were only able to be used in the rear and put them there (I think that's were they were anyway. Should the dealer that sold me the CPO car have told me about this? How far should I go to argue that I got a product that wasn't good enough quality for CPO?