What States Allow Studded Tires

Studded Tire Laws by State

Studded tires are legal in most U.S. states, but the rules vary widely by location, season, and tire type. A handful of states ban them completely, while others restrict them to certain months or require specific tread patterns.

States That Ban Studded Tires

A small number of states prohibit studded tires entirely, usually due to road-surface damage concerns. These include:

• Texas
• Louisiana
• Mississippi
• Alabama
• Florida
• Hawaii

Some of these bans have exceptions for emergency vehicles or specific commercial equipment, so it is worth checking the exact statute before assuming a flat prohibition.

States With Seasonal Restrictions

The most common approach is a seasonal window, typically allowing studs from October or November through April or May. States in this category include Colorado, Wyoming, Montana, Idaho, Michigan, Minnesota, and Wisconsin. In many of these states, the restriction is tied to the date range on the registration sticker or a fixed calendar window, and studs may be required to retract or be covered when the ban is in effect.

States With Regional Exceptions

A few states ban studded tires statewide but carve out exceptions for designated mountain or high-elevation zones. Colorado, for example, restricts them outside of certain mountain passes and ski areas. Washington State previously had a statewide ban but now allows them with a permit on specific routes, and Oregon permits them in some unincorporated areas while restricting them in others.

Tire and Equipment Rules

Beyond legality by state, several technical rules apply where studded tires are allowed. Many states require that studs be exposed only in the tread groove and not protrude beyond the tire surface. Some jurisdictions limit the number of studs per tire or require a minimum tread depth before studs can be installed. A few states differentiate between metal studs and rubber-coated studs, with the latter often being more broadly permitted.

Practical Considerations

Because enforcement and road conditions vary, drivers planning a trip through multiple states should check the current law for each jurisdiction. Tire shops familiar with mountain or northern routes can usually confirm local rules, and state highway patrol or department of transportation websites publish the most up-to-date statutes.