Yes, studded tires are legal in Montana with seasonal and weight restrictions enforced by the Montana Department of Transportation (MDT). Use is permitted from November 1 to April 30 on state highways, with a maximum tire weight of 1,500 pounds per stud. Local jurisdictions may impose additional ordinances, particularly in urban areas like Billings or Missoula.
Key Regulations for Studded Tires in Montana
- Seasonal Window: Operation is restricted to November 1 through April 30, aligning with MDT’s winter road maintenance protocols. Violations outside this period may result in citations under MCA 61-9-406.
- Stud Weight Limit: Tires may not exceed 1,500 pounds per stud, as mandated by MDT’s 2023 rule revisions to mitigate road damage. Non-compliant tires are subject to removal or fines.
- Local Ordinances: Cities like Bozeman and Helena may enforce stricter rules, including bans in residential zones or during snow emergencies. Check municipal codes annually for updates.
MDT’s 2026 compliance shifts emphasize electronic monitoring of studded tire use via weigh stations, with penalties escalating for repeat offenders. Operators must verify stud counts and seasonal compliance before deployment.