^ what he said but I'd like to add a number 4.
4. If your ute doesn't fall in the specifics of the gov recall site, you are the original owner and you haven't been notified don't worry Nissan will notify you when they expect you to bring your vehicle in. No notification no need to worry.
Owners who bought second hand check with either Nissan or the recalls site because you probably wont get a letter unless Nissan know you own the vehicle, they can't notify people they don't know as the owner.
Note: this goes for all recalls, not just the wheels, in fact the gov website lists recalls for all consumer items and unless you regularly read newspapers it's worth periodically checking such a website in case crap you buy is recalled.