Are Studded Tires Legal in Iowa? 2026-27 Season Dates

Q: Are studded tires legal in Iowa?

Yes, within a season. Iowa allows studded tires from November 1 through April 1. Iowa Code 321.442(3) reads: "Pneumatic tires with inserted ice grips or tire studs projecting not more than one-sixteenth inch beyond the tread of the traction surface of the tire upon any vehicle from November 1 of each year to April 1 of the following year"

Q: When can you put studded tires on in Iowa?

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

Q: When do studded tires have to come off in Iowa?

April 1 is the last day of the window, which for 2026-27 is Thursday, April 1, 2027.

Q: What are the studded tire rules in states near Iowa?

Minnesota, barred; Wisconsin, barred; Illinois, barred; Missouri, November 1 through March 31; Nebraska, November 1 through April 1; South Dakota, October 1 through April 30. Each state's page quotes its own statute.

Allowed in season

Rule

Iowa Code 321.442(3)

November 1

Opens for 2026-27

Sunday, November 1, 2026

April 1

Last day

Thursday, April 1, 2027

22 days

Window opens in

as of Saturday, October 10, 2026

The rule

The studded tire rule in Iowa

Allowed in season

Iowa allows studded tires from November 1 through April 1.

Iowa allows studded tires from November 1 to April 1, with studs projecting no more than a sixteenth of an inch.

Pneumatic tires with inserted ice grips or tire studs projecting not more than one-sixteenth inch beyond the tread of the traction surface of the tire upon any vehicle from November 1 of each year to April 1 of the following year

Projections on wheels, Iowa Code 321.442, read September 22, 2026. Read it at the source

2026-27 season

Studded tire season 2026-27 in Iowa

First daySunday, November 1, 2026

Last dayThursday, April 1, 2027

Iowa studded tire window, fall to spring

IowaNov 1 to Apr 1

The dashed line marks today.

Exceptions

Exceptions to the Iowa rule

School buses and fire department emergency apparatus may use studded tires at any time.

except that a school bus and fire department emergency apparatus may use such tires at any time.

Iowa Code 321.442(3). Read it at the source

Chains and traction

Iowa’s chain law

Iowa has no chain requirement law; chains of reasonable size are permitted when snow or ice makes skidding likely.

Tire chains of reasonable proportions upon any vehicle when required for safety because of snow, ice, or other conditions tending to cause a vehicle to skid.

Iowa Code 321.442(2), read September 22, 2026. Read it at the source

Tire chains wrapped across a truck tire, with snow packed around the wheel hub — Chains on a truck tire, photographed by the Oregon Department of Transportation. Chain rules sit in their own sections of each state code, apart from the studded tire window. “Truck chains (5123859267)”, Oregon Department of Transportation, CC BY 2.0

Across the state line

Studded tire windows in neighbouring states

Iowa and its neighbours, fall to spring

IowaNov 1 to Apr 1

MissouriNov 1 to Mar 31

NebraskaNov 1 to Apr 1

South DakotaOct 1 to Apr 30

The dashed line marks today.

MinnesotaBarred
WisconsinBarred
IllinoisBarred
MissouriAllowed in seasonNov 1 to Mar 31
NebraskaAllowed in seasonNov 1 to Apr 1
South DakotaAllowed in seasonOct 1 to Apr 30

Iowa studded tire questions

Are studded tires legal in Iowa?

When can you put studded tires on in Iowa?

When do studded tires have to come off in Iowa?

Are there exceptions to Iowa's studded tire rule?

Does Iowa have a chain law?

What are the studded tire rules in states near Iowa?

Compiled September 22, 2026 from Projections on wheels, Iowa Code 321.442 and the other sources linked beside each quote. Statutes change between winters, and a transportation department can extend a window where its statute allows, so the linked source is the one to check before a trip. Every state is in the studded tire laws by state table.