Are studded tires legal in Alabama?

Only under conditions. Alabama allows metal studded tires of reasonable size only when snow, rain or other slippery conditions make them needed for safety, with no date window. Ala. Code § 32-5-210 reads: "(b) No tire on a vehicle moved on a highway shall have on its periphery any block, stud, flange, cleat, or spike or any other protuberances of any material other than rubber which project beyond the tread of the traction surface of the tire, except that it shall be permissible to use farm machinery with tires having protuberances which will not injure the highway and, except also, that it shall be permissible to use tire chains or metal studded or safety spike tires of reasonable proportions upon any vehicle when required for safety because of snow, rain, or other conditions tending to cause a vehicle to slide or skid."

Farm machinery may use protuberances that will not injure the highway.

Tire chains of reasonable size are allowed on any vehicle when snow, rain or other conditions make sliding or skidding likely. The statute reads: "it shall be permissible to use tire chains or metal studded or safety spike tires of reasonable proportions upon any vehicle when required for safety because of snow, rain, or other conditions tending to cause a vehicle to slide or skid."

The same clause also permits safety spike tires under the same conditions.

Mississippi, barred; Tennessee, October 1 through April 15; Florida, no seasonal dates. Each state's page quotes its own statute.