Yes, studded tires are legal in New Hampshire with strict seasonal and weight-based limitations enforced by the New Hampshire Department of Transportation (NHDOT). State law permits their use from October 15 to April 15 annually, provided vehicles meet the 10,000-pound gross vehicle weight threshold. Local ordinances in municipalities like Manchester and Nashua may impose additional restrictions, requiring compliance with municipal traffic codes.
Key Regulations for Studded Tires in New Hampshire
- Seasonal Window: Studded tires are permitted exclusively between October 15 and April 15, as outlined in NHDOT Rule 540.03.
- Weight Threshold: Vehicles exceeding 10,000 pounds gross weight are prohibited from using studded tires under NH Revised Statutes §265:40.
- Local Ordinances: Municipalities may enact supplementary restrictions; for example, Concord’s traffic code mandates studded tire signage on vehicles during permitted months.
NHDOT’s 2026 compliance updates emphasize enforcement via roadside inspections, particularly in high-traffic corridors like I-93 and I-89. Violations incur fines up to $250 per offense, with repeat offenders facing escalated penalties. The New Hampshire State Police collaborate with NHDOT to monitor compliance, particularly in northern counties where winter road conditions necessitate stricter oversight. Motorists are advised to verify municipal regulations before installation, as non-compliance risks both legal and operational liabilities.