I've noticed something w/ my 2003 g35 and wanted to see what everyone thought about it. Sometimes when I deaccelerate and ease my grip on the steering wheel, I feel the steering wheel turn to the right or left a bit. Usually I just turn it back and its no problem but I figured I'd let it turn to see how far it turns, and often it it turns around 45 degrees to either side, usually in the direction of where the road slants.

I'm not sure if this is because the roads are a bit slanted or if it's something with the alignment of the wheel. My brother insists there's no problem with it so I haven't taken it in yet, but I wanted to get some more opinions on it.

 

Sounds like your brakes are pulling -- Have the dealer check them.
C.