Is Studded Tires Legal in Michigan After the 2026 Policy Reforms?

Yes, studded tires are legal in Michigan but heavily restricted under state and local regulations. The Michigan Department of Transportation (MDOT) permits their use only during winter months, typically November 1–April 15, with specific weight and size limitations to minimize road damage. Local municipalities may impose additional seasonal or geographic restrictions, particularly in urban areas where studded tire wear accelerates pavement deterioration.

Key Regulations for Studded Tires in Michigan

  • Seasonal Operation: Permitted exclusively from November 1 to April 15, aligning with MDOT’s winter maintenance protocols and reducing non-winter road wear.
  • Weight and Size Limits: Studs must not exceed 1/16-inch protrusion from the tire tread and weigh no more than 1.18 grams each, per MDOT’s 2023 engineering standards.
  • Local Restrictions: Cities like Ann Arbor and Detroit may impose additional bans in high-traffic corridors or during non-winter periods, enforced via municipal ordinances and MDOT’s 2026 compliance monitoring updates.

Violations of these regulations may result in citations under Michigan’s Vehicle Code (MCL 257.677) or local traffic ordinances, with penalties escalating for repeat offenses. Motorists should verify county-specific rules, as enforcement varies between jurisdictions. For real-time compliance, consult MDOT’s winter travel advisory system or local DOT websites before installation.