have higher profile tires in the front than in the rear. I know this is the case for stock wheels/tires, but it looks to have carried over to your aftermarket wheels/tires as well. The profile difference between the fronts/rears is fairly noticeable in the second pic, unless the rears are just pushed up inside the wheel well more in the rear, so I can't see the top of the tire.
In the stock case, did Nissan engineers intend for higher profile tires to be mounted on the front for weight distribution purposes (front is heavier than rear of car)?