Does Utah require snow tires?

Utah does not require snow tires. There is no statute obliging you to put winter tires on your car when the weather turns, and nobody is going to ticket you in November for running all-seasons.

What Utah regulates instead is three narrower things: how worn your tires may be, when you may run studs, and when a particular road requires traction devices. The third one is the rule that strands people, and it is the one almost nobody reads until they are sitting at a closed canyon mouth.

The tread depth rule, which does apply year round

Under Utah Code 41-6a-1636(7), you may not operate a vehicle if any tire in use is in an unsafe operating condition, or has a tread depth less than 2/32 of an inch.

The neighborhoods where this stops being theoretical: Bell Canyon at the canyon mouth in Sandy, SunCrest on the Traverse Ridge road, and Quail Hollow on the east bench.

The measurement is more specific than people expect. It is taken in any two adjacent tread grooves, at three equally spaced intervals around the circumference of the tire. It may not be taken at a tread wear indicator, tie bar, hump or fillet, which are the raised spots deliberately molded into the tread. A tire can pass at one point on the circumference and fail at another, and the statute is written so that the worst spot governs.

A violation of the section is an infraction. Separately, a person in the business of selling tires may not sell or offer for sale for highway use any tire that fails this standard.

Worth saying plainly: 2/32 is a legal floor, not a safe winter tread depth. It is the point at which the tire becomes unlawful, which is a long way past the point at which it stops gripping wet snow.

Studded tires, and the dates

Studs are legal in Utah on a seasonal basis. Under 41-6a-1636(5)(a), a tire with tungsten carbide studs may be used only during the winter periods of October 15 through December 31 and January 1 through March 31 of each year.

Two other conditions attach. The studs may not project more than .050 inches beyond the tread of the traction surface. And they may not be used on a vehicle with a maximum gross vehicle weight rating over 9,000 pounds unless the vehicle is an emergency vehicle or a school bus.

So the practical window is mid-October to the end of March, and April is the month people forget. Metal tires are prohibited outright, as are other non-rubber protuberances except where this section or a UDOT rule allows them.

Tire chains of reasonable proportions are permitted whenever they are required for safety because of snow, ice or other conditions tending to cause a vehicle to skid.

Traction restrictions, which are the real rule

This is the one that matters in practice, and it is administered by UDOT rather than written into the tire statute.

UDOT designates specific state highway segments where, during severe winter weather, drivers must use traction devices. The department publishes a traction law summary sheet with a map of the affected routes, and the restriction applies when it is posted and active rather than all winter.

I am not going to list the routes or the device tiers from memory, because getting that wrong is how someone ends up turned around at a checkpoint. Pull UDOT’s current summary sheet and look at the map before the first storm, and check UDOT’s road conditions the morning you intend to drive a canyon.

The thing to understand about the structure: this is a conditional requirement on named roads, not a statewide seasonal one. Your car can be entirely legal on I-15 and not legal on a restricted canyon route on the same afternoon.

What this means if you live in the south end of the valley

Three things, and the first is the one buyers underestimate.

Your street is not the state highway. Snow removal priority runs to the arterials first. If you buy up against the foothills, the road you actually have to get down in the morning may be a residential street on a slope, cleared later than the road it feeds. That is a function of where the house sits, and you can ask the city about plow priority for a specific street before you buy.

Elevation inside one city is real. Herriman runs from the valley floor up into the foothills, and the top of it holds snow when the bottom is already wet pavement. Two houses in the same city, four hundred feet apart vertically, are different winter driving propositions. What living in Herriman is actually like covers the broader version of that.

The commute determines whether any of this matters. If your route is valley-floor arterials to downtown, all-seasons and decent tread will do what they have always done. If your route involves a canyon, you are in traction-restriction territory several times a winter. What the Herriman to Salt Lake City commute is really like goes through the route options.

For anyone moving from the south of the state, the contrast is sharper than you think. Whether it snows in St. George is a genuinely different answer, and people who relocate north from Washington County are the ones I see caught out in their first winter.

What I actually see

Buyers who tour the foothills in July, fall for the view, and have never once thought about the driveway. A steep north-facing driveway in a foothill subdivision is a winter chore and occasionally a winter problem, and it is invisible on a summer showing.

It is an easy thing to check and nobody checks it. Stand in the driveway and look at which way it faces and how steep it is. North-facing holds ice because it never gets sun. Then look at whether the street itself is a grade you would want to come down on a bad morning.

None of that is a reason to avoid the foothills. It is a reason to know what you are buying, and occasionally a reason to prefer one lot over the one next door.

The honest advice on tires

The law gives you a floor and the floor is low. What actually determines whether your winter is fine is tread depth well above the legal minimum, and whether your tires are rated for snow at all.

If your commute includes a canyon, or your street is a foothill grade, dedicated winter tires are worth it and studs are a legitimate option inside the seasonal window. If you drive valley arterials to an office, good all-season tires with real tread remaining are generally what people here run.

Either way, check tread in October rather than in December. The one failure mode I would actively warn against is discovering in the middle of a storm that you are riding on tires you meant to replace in the fall.

What to do next

Check your tread depth now, at several points around each tire, and pull up UDOT’s traction law map so you know which of your regular routes can be restricted.

I am Kelsey Earl, a Realtor with Keller Williams South Valley and I have shown houses in this valley in every kind of weather. If you are weighing a foothill lot and want an honest read on what winter looks like from that address, tell me what you are considering.

Note: Statutory details here come from Utah Code 41-6a-1636 as of October 21, 2026, and traction restriction practice from UDOT. The tire statute was amended in the 2026 General Session and traction routes change. Confirm current rules at le.utah.gov and udot.utah.gov before relying on them.