Yes, studded tires are legal in Wisconsin but face strict seasonal and regional restrictions enforced by the Wisconsin Department of Transportation (WisDOT) and local municipalities. State law permits their use only from November 15 to April 15, with additional bans in Milwaukee, Dane, and Waukesha counties year-round due to air quality concerns. Violations may result in fines up to $200 under WisDOT’s 2026 compliance framework.
Key Regulations for Studded Tires in Wisconsin
- Seasonal Window: Operation is restricted to November 15–April 15 statewide, aligning with WisDOT’s winter traction standards to balance safety and environmental impact.
- County-Specific Bans: Milwaukee, Dane, and Waukesha counties prohibit studded tires entirely year-round, citing elevated particulate matter risks under EPA-approved air quality plans.
- Penalties and Enforcement: Non-compliance triggers fines up to $200, with local law enforcement empowered to issue citations under Wis. Stat. § 347.45(1m), effective January 2026.
WisDOT’s 2026 regulatory updates emphasize enforcement in high-traffic corridors like I-94 and I-41, where studded tire wear accelerates road deterioration. Operators must verify local ordinances, as some municipalities impose additional restrictions beyond state law.