I am not sure where, or from whom this information is coming from.
I just spoke with someone at Macpek today and was told that the part #X41661 is no longer available.
I was also told that Model/part number: x41665 is the wheel listed for the new gen Xterra.
It is NOT a 7 inch rim, but rather a 6.5 inch rim.
Factory tire sizes will not work with this rim. 7-9 " is recommended.
The fellow I talked to said there have been no issues regarding caliper clearence.
They are available from Canadian Tire in Canada.