if you can find them ....the rover crowd says the best for exped is the XZL 8.25r16 a 34" tire 9.4?" wide tire...they wear like iron and are SUPER strong
the elusive XL is even harder to find.....here is a pic of the xzl...great tire for extreme use...
for an everyday tire a bit too much....for normal off road...they dont flex...but....for expedition you want a tire that will not fail.
http://www.roverhybrids.com/images/DSCN0695.JPG
http://www.roverhybrids.com/images/DSCN0706.JPG