There are more than a few topics on the off-road capability of the 4x2 in the 4x2 section...
http://www.xterraownersclub.com/ubb/ultimatebb.php?ubb=get_topic;f=8;t=000168
http://www.xterraownersclub.com/ubb/ultimatebb.php?ubb=get_topic;f=8;t=000163
http://www.xterraownersclub.com/ubb/ultimatebb.php?ubb=get_topic;f=8;t=000176
http://www.xterraownersclub.com/ubb/ultimatebb.php?ubb=get_topic;f=8;t=000171
http://www.xterraownersclub.com/ubb/ultimatebb.php?ubb=get_topic;f=8;t=000167
http://www.xterraownersclub.com/ubb/ultimatebb.php?ubb=get_topic;f=8;t=000169

etc...
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