Here is just a reminder that there is a new State law requiring licensing for off-road vehicles. You can look up this new law (SB1167) at the State Legislature website http://www.azleg.gov/
The City of Phoenix does not currently maintain any off-highway vehicle recreation areas. This means that off-roading is not allowed on city maintained or owned land. Some resources for off-road enthusiasts can be found at the Arizona Game and Fish Dept. website http://www.azgfd.gov/outdoor_recreation/off_highway.shtml