Latvia Winter Tyres 2026-27: 4 mm, 1 Dec to 1 March

Clause 219 of Latvia’s road traffic regulations puts every car and bus up to 3,500 kg on tyres intended for winter conditions between 1 December and 1 March (likumi.lv), and in that window CSDD measures tread against 4 mm rather than the 1.6 mm roadworthiness floor. A tyre that passes inspection in October can therefore be illegal in January without losing another millimetre. Studs are legal here — but only outside summer: the same clause bans them from 1 May to 1 October.

Your case: If your dates straddle 1 December or 1 March, the same car changes legal status overnight while nothing happens to the tyres themselves. The same window moves the motorway limit too — clause 103.4 posts 120 km/h for cars on motorway-signed roads and drops it to the 110 km/h our country data records between 1 December and 1 March — so read driving in Latvia for the penalty scale a winter roadside stop is measured against.

Tyre Law Summary for Latvia

Winter Tyre Requirements in Latvia

The rule is a calendar rule, not a weather rule. Clause 219 reads that between 1 December and 1 March a car or bus whose permitted mass does not exceed 3,500 kg must be fitted with tyres intended for driving in winter conditions — no snowfall test, no discretion, and no exemption for a short hop between Riga airport and the city.

CSDD’s roadside campaign in March 2026 shows how the tread figure is applied in practice: of 8,216 vehicles checked, 627 (8%) were sitting between 4 and 5 mm and were warned, because 4 mm is the winter minimum for vehicles up to 3,500 kg (CSDD).

Practical advice for Latvia:

• Fit before 1 December, not on it — garages fill in the last November week
• A winter tyre at 4.5 mm is legal today and borderline in six weeks; measure before you travel, not after
• Summer tyres become legal again on 2 March, but studs may stay on until the end of April

Minimum Tread Depth in Latvia

Latvia enforces two different floors. In the winter season the figure for vehicles up to 3,500 kg is 4 mm; outside it, the general roadworthiness minimum of 1.6 mm applies, measured across the central three-quarters of the tread all the way around the tyre. Clause 222.8 of the traffic regulations makes driving below the inspection minimum an offence in its own right.

The gap between those two numbers is where most winter warnings land. The difference in wet braking at 80 km/h:

How to check in Latvia: use a tread depth gauge from any automotive shop, or look for the built-in tread wear indicators (TWI) — small raised bars in the grooves that become flush with the surface at 1.6 mm.

Studded Tyres in Latvia

Studs are seasonal rather than restricted by road type. Clause 219 prohibits driving a vehicle on studded tyres from 1 May to 1 October, which leaves them legal for the whole of the cold half of the year — including the shoulder weeks in October and April when the winter tyre mandate itself is not yet, or no longer, running.

All-Season Tyres in Latvia

Clause 219 asks for “tyres intended for driving in winter conditions”, and CSDD applies that as a marking test: from 1 December to 1 March a car up to 3.5 t needs tyres marked with the mountain-and-snowflake symbol (3PMSF). Its November 2025 reminder says tyres carrying only M+S, without the snowflake, “will not be considered tyres suitable for the winter period”, and may be used only from 2 March to 30 November (CSDD). An all-season tyre therefore qualifies only if it carries 3PMSF and still measures 4 mm or more.

Penalties for Tyre Violations in Latvia

The roadside consequence is not always a fine: CSDD’s own report describes drivers being warned at 4-5 mm and vehicles being removed by recovery truck where the defect was serious. Clause 222 lists driving below the inspection tread minimum among the faults that make further driving prohibited outright, which is the part that ruins a travel day — a car taken off the road in Latgale in January is a tow, not a ticket.

We do not publish a euro figure for the tyre penalty itself, because the administrative tariff is not something we can point to in an official Latvian source.

Tyre Strategy for Latvia’s Climate

Latvia has cold winters and mild summers. This has direct implications for tyre choice:

• Below 7°C: summer tyre rubber hardens and loses grip dramatically. Winter tyres are not just about snow — they are about temperature. Fit them before the first frost
• Ice risk: black ice forms on bridges and overpasses first. Even with winter tyres, reduce speed on cold mornings
• Salt and grit: winter road treatments corrode wheels and damage tyre sidewalls over time. Wash your wheels regularly through winter
• Storage: when you swap tyres seasonally, store the off-season set in a cool, dark place. Standing tyres on their side prevents flat spots

Road Conditions and Tyre Wear in Latvia

Road surfaces in Latvia are generally good quality, with well-surfaced motorways and maintained secondary roads. Urban stop-and-go traffic causes shoulder wear, while longer highway stretches wear the centre. Regular rotation (every 8,000–10,000 km) keeps wear even.

How Latvia’s Tyre Laws Compare to Neighbours

Tyre requirements change at borders. Here is what to expect near Latvia:

• Denmark: Winter tyres not required. Tread: 1.6 mm. Studded: restricted.
• Sweden: Winter tyres mandatory (1 Dec - 31 Mar (when winter road conditions are present)). Tread: 3.0 mm. Studded: restricted.
• Lithuania: Winter tyres mandatory (10 Nov - 31 Mar). Tread: 3.0 mm. Studded: allowed in season.
• Estonia: Winter tyres mandatory (1 Dec - 1 Mar (can be extended 15 Oct - 31 Mar)). Tread: 1.6 mm. Studded: restricted.

Denmark does not require winter tyres, so if you are leaving Latvia you may be carrying winter tyres unnecessarily — but they still improve safety in cold weather.

For speed limits, traffic rules, and licence requirements in Latvia, see our Driving in Latvia guide.