Are studded tires legal in Pennsylvania?

Yes, within a season. Pennsylvania allows studded tires from November 1 through April 15. 75 Pa.C.S. 4525(c) reads: "Tires in which ice grips or tire studs of wear resisting material have been installed which provide resiliency upon contact with the road and which have projections not exceeding two thirty-seconds of an inch beyond the tread of the traction surface of the tire shall be permitted between November 1 of each year and April 15 of the following year."

From November 1. For the 2026-27 season that is Sunday, November 1, 2026, and the window runs through Thursday, April 15, 2027.

April 15 is the last day of the window, which for 2026-27 is Thursday, April 15, 2027. The Governor may extend the season by executive order when road conditions make studs a safety factor.

The Governor may extend the season by executive order when road conditions make studs a safety factor. The statute reads: "The Governor may by executive order extend the time tires with ice grips or tire studs may be used when highway conditions are such that such tires would be a safety factor in traveling Commonwealth highways."

Studs must be wear resisting, give resiliency on the road, and project no more than two thirty seconds of an inch.

Pennsylvania lets drivers use tire chains temporarily during snow and ice emergencies under PennDOT regulations. The statute reads: "Tire chains may be temporarily used on vehicles during periods of snow and ice emergency if they are in conformance with regulations promulgated by the department."

New York, October 16 through April 30; New Jersey, November 15 through April 1; Delaware, October 15 through April 15; Maryland, November 1 through March 31 with conditions; West Virginia, November 1 through April 15; Ohio, November 1 through April 15. Each state's page quotes its own statute.