Winter TyresWinter Tyres South Korea 2026: No Law, Gangwon Snow
No winter-tyre law exists in South Korea. The rule that does bite in snow is the speed limit: posted limits fall 20 per cent in rain or light snow and 50 per cent on snow-covered roads.
There is no legal obligation to fit winter tyres in South Korea. What does change by law when it snows is your speed limit.
No rule nationwide — but the north-east buries under snow
South Korea has no nationwide winter-tyre law, and around Seoul and the milder south all-season tyres cope with most of the winter. The mountainous north-east — Gangwon Province, home to the ski resorts and the 2018 Winter Olympics sites — gets heavy, reliable snow, and there winter tyres or chains are strongly advised, with chains sometimes required on steep mountain roads. Rental agencies in snowy regions fit winter tyres in season. So the honest answer depends on where you drive: on city trips you will be fine on normal tyres, but heading for Pyeongchang or the Gangwon ski country in deep winter, fit winter tyres or carry chains.
The Rule That Actually Binds: Reduced Limits
Korea regulates winter driving through speed rather than equipment. Under the Enforcement Rule of the Road Traffic Act (art. 19), posted limits are cut automatically by weather:
| Conditions | Reduction |
|---|---|
| Rain, or snow settling on the road | 20 per cent off the posted limit |
| Snow-covered road, or visibility under 100 m in fog | 50 per cent off the posted limit |
That turns a 100 km/h expressway into 50 km/h on a snowy day, without a single new sign being put up.
Speed Limits, for Reference
The same rule sets 100 km/h on expressways with two or more lanes in each direction, 120 km/h only on routes specifically designated by the Commissioner General, 80 km/h on single-lane expressways and 90 km/h on motor-vehicle-only roads, with 60 km/h on ordinary roads outside built-up areas and 50 km/h in town.
Tread Depth
1.6 mm is the international benchmark and the figure roadworthiness checks work to. It is a floor, not a target: on cold, wet Korean winter roads, 3 mm is the point at which a sensible driver replaces rather than the point at which a police officer objects.
Studded Tyres
Studs are not in general use in South Korea and no national studded season is published. Winter traction here means studless winter tyres, or chains fitted when mountain signs call for them.
All-Season Tyres
All-season tyres are ordinary and legal in South Korea, as they are anywhere with no mandate. They are a reasonable answer to a Seoul winter and a poor one to a Gangwon one.
Related Driving Rules
- Alcohol limit: 0.03 BAC
- Expressway speed limit: 100 km/h (120 on designated routes)
- Warning triangle: Required
- Reflective vest: Recommended
Verify tyre requirements for your destination
Check Tyre RequirementsWhat Most Guides Don’t Tell You
Chains Are the Korean Answer, Not Studs
Where European drivers reach for studs, Korean drivers reach for chains. They are sold everywhere near the ski regions, and mountain road signs are the trigger for fitting them. If you are heading into Gangwon in January, the chains live in the boot from the start of the trip.
Hire Cars Vary by Where You Collect Them
A car picked up at Incheon for a city holiday will be on all-seasons. One booked from a Gangwon branch for the ski season is far more likely to be on winter tyres. If your route takes you from one to the other, say so at the counter rather than discovering the difference on a mountain road.
The Speed Cut Is Not Advisory
The 20 and 50 per cent reductions are part of the rule, not guidance. Drivers who hold the posted number through snowfall are speeding by the time a camera catches them, even though no sign changed.
Insurance
With no mandate to breach, the exposure in Korea is ordinary negligence rather than non-compliance: an accident on bald tyres in snow will be read as your choice, whatever the rulebook permits.
How South Korea Compares
| Country | Winter Tyres | Period | Studded | Min Tread |
|---|---|---|---|---|
| South Korea | Not required | — | Not in general use | 1.6 mm benchmark |
| Japan | Situational | Prefectural regulations; Hokkaido, | Restricted | 1.6 mm |
| China | Not required | — | Restricted | 1.6 mm |
| Taiwan | Not required | — | Restricted | 1.6 mm |
Key Facts at a Glance
| Country | South Korea |
| Winter tyres mandatory | No |
| Snow rule | Posted limit −20% in rain/snowfall, −50% on snow-covered roads |
| Expressway limit | 100 km/h (120 designated, 80 single-lane) |
| Tread benchmark | 1.6 mm |
| Practical replacement | 3 mm |
| Studded tyres | No published national season |
| All-season accepted | Yes |
| Emergency number | 112 |
Learn More
Plan your trip with these detailed guides:
Crossing more than one border this winter? See winter tyre rules, dates and legal tread minimums for every country →
Tyre details
- EU tyre label grades for wet grip and fuel use — What each letter and pictogram on the sticker actually measures.
- What the speed letter on the sidewall allows — H, V, W and Y decoded, plus the sticker rule for lower-rated winter sets.
- Load index: will the tyre carry a loaded car? — The two- or three-digit number that caps weight per tyre.
- Tyre noise ratings in decibels — What the dB figure and the A, B or C class on the label mean inside the car.
- Starting tyre pressure for your size and load — A starting figure in bar and psi, then the door placard has the final word.
Full rules, fines & requirements
Winter tyres, tread depth & rules
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Related Questions
No. There is no winter-tyre mandate in South Korea, and standard tyres are permitted year-round. Chains or winter tyres are a practical necessity in Gangwon rather than a legal one.
They are not in general use, and no national studded season is published. Winter traction in Korea means studless winter tyres or chains.
Yes, the speed limit does. Posted limits are reduced by 20 per cent in rain or light snow and by 50 per cent on snow-covered roads or in heavy fog.
1.6 mm is the international benchmark and the figure roadworthiness checks work to. For cold, wet winter roads, treat 3 mm as the practical replacement point.