Problem with premature treadwear and noise on 2003 FX45

Having a problem with premature and uneven treadwear on the tires and a grinding noise when dropping to low speeds even before the brake is applied. The camber and suspension has been checked and tested and they claim it all checks out okay but we feel we are not getting a straight answer from the dealership service department. We just put a new set of tires on and they are already showing strange/premature treadwear. These new tires have a little over 7k miles on them. At highway speeds, there is a noticeable thumping noise. The car is not driven hard either. Anyone else having problems with this?

I know the FX is based of a 350z Chaise. I know when you aligh the Z's they have tire wearing issues. There is a special way you need to aligh those cars. You just can stick them on there and aligh .. They have bullitens on how to aligh the Z's , I m just asuming its the same procedure. I don't work on inffinities. I only work on nissans.

What i understand is happening , ( At Least onthe Z cars ) Is after it's aligh'd once you start driving the pressure on the front wheels pulls the toe out , witch casues uneven tire wear, mainly on the edges of your tires. So the vech is suppose to be lifted and claibrated, then adjusted with the toe slightly in. So when you start to drive When it pulls the toe , It pulls it into Spec not Out of it. GL

I have the same problem as well, one of my tires is more worned out than the other. It's like I slapped one random racing slick tires on mine. I just bought 4 new tires for it and damn! Cost me $800 for them. >_< As for the grinding noise, I have no problem with that at all.