Yes, studded tires are legal in South Dakota but subject to seasonal and weight-based restrictions enforced by the South Dakota Department of Transportation (SDDOT). State law permits their use from October 1 to April 30 on vehicles exceeding 10,000 pounds, while passenger vehicles may only use them under emergency conditions or with prior approval. Local jurisdictions, including Rapid City and Sioux Falls, may impose additional temporary bans during adverse weather events, aligning with SDDOT’s 2026 winter mobility compliance protocols.
Key Regulations for Studded Tires in South Dakota
- Seasonal Window: Legal operation is confined to October 1–April 30, with exceptions for commercial vehicles over 10,000 pounds, which may use studded tires year-round if equipped with dual rear wheels.
- Weight Threshold: Passenger vehicles under 10,000 pounds require a special permit from SDDOT for studded tire use, typically granted only for emergency or hazardous road conditions.
- Local Overrides: Municipalities like Rapid City and Sioux Falls may issue temporary bans during unseasonal weather, mandating compliance with municipal ordinances under SDCL 32-15-12.1.