Tom, yea it seems they can take the higher pressurest ... and to answer your q: yes, stock 18x7 rims ...
I find irony there, being that you lower pressure when going off road, etc.
Kat, Agreed, expected a somewhat harder ride but WOW! the end of my 'street' is gravel and has some deep potholes ... you can really feel it there!
Pics will be posted when I take a few more (and then remember how to add them on here - been a while)