S.D. Codified Laws § 32-3-51.19

For purposes of §§ 32-3-51.5, 32-3-51.20, and 32-3-51.21, the term, salvage vehicle, means any motor vehicle that an insurer or self insurer determines a total loss due to theft or to damage caused by fire, vandalism, collision, weather, submersion in water, or flood. This section does not apply to any motor vehicle more than ten model years old or with a gross vehicle weight rating of more than sixteen thousand pounds.