Some offroaders demand that steel wheels be fitted instead of alloys, believing that the fact that steel wheels bend instead of cracking or shattering means that they could get back to civilization if the encounter several large rocks at the wrong time. There's some validity to this point of view - but chances are if you damage two wheels so bad you're losing air you're screwed anyway, so...
As for the hits, an email I have gotten this morning seems to indicate that I might be able to do something about that. It seems your Off Road Package wheels were also shipped as stock wheels on some 2004-2005 Frontiers and were wider spread on the 06-up trucks, among others. A quick eBay search later and guess what?
http://www.ebay.com/itm/NISSAN-FRON...Parts_Accessories&hash=item1c25978d49&vxp=mtr
Look familiar?
I purchased via my mobile as soon as I saw your post. I just can't quote a post this long on my cell easily. Thanks for the find!