Japan's 2026-27 Rule: Hokkaido Mandates Winter Tyres

Hokkaido and Tohoku prefectures require winter tyres under their own regulations, not a single nationwide date. Elsewhere in Japan, the requirement is situational — tyres must match conditions actually on the road, with tread never allowed below 1.6mm. Studded tyres remain restricted across the country as well.

Japan enforces vehicle standards strictly, and rental cars are usually well kept — your job is to keep them that way and not get caught out on a technicality.

Tyre Law Summary for Japan

Winter Tyre Requirements in Japan

Japan uses a situational winter tyre system. The period when winter conditions typically occur: Prefectural regulations; Hokkaido, Tohoku require winter tyres in winter.

The law does not specify dates. It specifies conditions. When snow covers the road or ice forms on the surface, your vehicle must be on winter-rated tyres. The practical effect is that most drivers in Japan switch tyres between October and April, but the legal trigger is weather, not the calendar.

Minimum Tread Depth in Japan

The minimum tread depth enforced in Japan is 1.6 mm. This is measured across the central three-quarters of the tread, all the way around the tyre.

Tyre professionals in Japan advise changing at 3.0 mm. Waiting until 1.6 mm leaves almost no safety margin. The difference in wet braking at 80 km/h:

How to check in Japan: 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 Japan

Studded tyres are restricted in Japan. There may be seasonal windows, regional rules, or maximum stud specifications. Check local regulations before fitting studded tyres, especially if you are driving across regional borders.

All-Season Tyres in Japan

All-season tyres with the M+S marking are accepted in Japan. For drivers who prefer not to switch tyres seasonally, they offer a practical middle ground — adequate in mild winters and acceptable in summer heat, though not optimal in either extreme.

Penalties for Tyre Violations in Japan

Tyre violations in Japan carry fines and may affect your licence. For context on enforcement severity: a seatbelt violation costs Warning / 1 point (no fine for first offence), so expect tyre offences to be taken at least as seriously.

On-the-spot fines: Japan issues fines at the roadside. Carry sufficient cash or a card to pay immediately.

Visitors take note: Japan enforces tyre rules on foreign-plated vehicles just as strictly as on domestic ones.

Tyre Considerations for Japan’s Conditions

With seasonal climate with monsoons, Japan presents moderate tyre challenges:

• Wet autumn and winter roads demand good tread — do not push tyres to the 1.6 mm legal limit before replacing them
• Summer heat increases pressure; winter cold decreases it. Check monthly
• If you mainly drive in urban areas with mild winters, all-season tyres are practical. For mountain routes or frequent winter driving, dedicated seasonal tyres are the safer option

Road Conditions and Tyre Wear in Japan

Road surfaces in Japan 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.

Japan drives on the left. If your vehicle was originally configured for right-hand traffic, weight distribution is slightly different, which can cause uneven wear patterns over time.

How Japan’s Tyre Laws Compare to Neighbours

If you are driving across borders from Japan, tyre regulations may change at each crossing:

• South Korea: Winter tyres not required. Tread: 1.6 mm. Studded: restricted.
• China: Winter tyres not required. Tread: 1.6 mm. Studded: restricted.
• Taiwan: Winter tyres not required. Tread: 1.6 mm. Studded: restricted.

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