Ariz. Rev. Stat. § 28-1093
B. If pneumatic tires, in substitution for the same type or other type of tires, are placed on a vehicle in operation on July 1, 1950:
C. A person may operate a vehicle with a total width of the vehicle or the load on the vehicle of not more than one hundred two inches, exclusive of safety equipment, on:
4. Streets that are designated by a local authority as follows:
D. Notwithstanding subsections A, B and C of this section, the total outside width of a noncommercial recreational vehicle as defined in section 41-4001 may be more than one hundred two inches if the excess width is attributable to recreational vehicle appurtenances that do not extend beyond the exterior rearview mirrors of the recreational vehicle or tow vehicle and the rearview mirrors only extend the distance necessary to provide the appropriate field of view for the vehicle before the appurtenances are attached. For the purposes of this subsection, "recreational vehicle appurtenance":
1. Includes: