Are studded tires legal in Maryland?

Only under conditions. Maryland bans tire studs on its highways except that vehicles registered in Allegany, Carroll, Frederick, Garrett and Washington counties may use studded snow tires from November 1 through March 31, and MVA rules limit those vehicles to driving within those five counties. Md. Code, Transp. § 22-405.2; COMAR 11.13.02.10 reads: "(b) Except as provided in subsection (c) of this section, a tire on a vehicle driven on a highway may not have on its periphery any block, stud, flange, cleat, or spike or any other protuberance of any material, other than rubber, that projects beyond the tread of the traction surface of the tire"

From November 1 under the conditions the statute sets. For the 2026-27 season that is Sunday, November 1, 2026, and the window runs through Wednesday, March 31, 2027.

March 31 is the last day of the window, which for 2026-27 is Wednesday, March 31, 2027.

Owners of vehicles registered in Allegany, Carroll, Frederick, Garrett or Washington County are exempt from the stud ban from November 1 through March 31. The MVA regulation says those studded vehicles may be operated only in the same five counties. Vehicles not registered, and not required to be registered, in Maryland may use studded tires under the statute.

Tire chains of reasonable size may be used on any vehicle when snow, ice or other conditions make skidding likely. The statute reads: "(2) It is permissible to use tire chains of reasonable proportions on any vehicle when required for safety because of snow, ice, or other conditions tending to cause a vehicle to skid"

Pennsylvania, November 1 through April 15; Delaware, October 15 through April 15; Virginia, October 15 through April 15; West Virginia, November 1 through April 15. Each state's page quotes its own statute.