N.M. Stat. § 66-3-403
Expiration of dealer plates.
Every dealer plate issued pursuant to Section 66-3-402 NMSA 1978 expires at
midnight on December 31 of each year. Upon payment of the proper fee, the person to
whom the dealer plate was issued may apply to the department for a new plate or
validating sticker for the ensuing year. Renewal of all dealer plates shall be on or before
December 31. A person who operates a vehicle with a dealer plate that has expired is
guilty of a penalty assessment misdemeanor.