Mönsterdjup — krav och mätning

1,6 mm är lagkravet — men experter rekommenderar byte vid 3-4 mm. Skillnaden i bromssträcka mellan 4 mm och 1,6 mm kan vara över 10 meter på vått underlag.

Lagkrav och rekommendationer

Varför 3 mm istället för 1,6 mm?

Vid 80 km/h på vått underlag:

• 8 mm mönsterdjup: bromssträcka ~26 m
• 3 mm mönsterdjup: bromssträcka ~32 m
• 1,6 mm mönsterdjup: bromssträcka ~43 m

Skillnaden mellan 3 mm och 1,6 mm: 11 meter — ungefär 3 billängder. Det kan vara skillnaden mellan att stanna och att köra in i bilen framför.

Så mäter du mönsterdjup

Med mönsterdjupsmätare (bäst)

1. Köp en mönsterdjupsmätare (30–80 kr på Biltema/Mekonomen)
2. Tryck ner mätaren i huvudspåret (det djupaste spåret)
3. Läs av i mm
4. Mät på minst 3 ställen per däck (insida, mitten, utsida)
5. Det lägsta värdet räknas

Med enkrona (snabbtest)

En svensk enkrona har en guldkant som är ~3 mm bred:

1. Stoppa in enkronan i mönstret med guldkanten neråt
2. Om guldkanten syns helt = under 3 mm → byt snart
3. Om guldkanten döljs = över 3 mm → OK

⚠️ Detta är ett grovt test — använd mätare för exakt värde.

Slitageindikator (TWI)

Alla däck har inbyggda slitageindikatorer — små upphöjningar i botten av mönsterspåren:

• Markerade med "TWI" eller en triangel på sidan
• När slitbanan är i nivå med indikatorn = 1,6 mm → byt omedelbart

Mönsterdjup vid besiktning

• Lagkrav: Minst 1,6 mm i hela slitbanans bredd
• Besiktningsmannen mäter med kalibrerad mätare
• Under 1,6 mm = underkänt direkt
• Ojämnt slitage kan ge anmärkning (indikerar hjulvinkelproblem)

Se besiktningsguiden för alla kontrollpunkter.

Vinterdäck — strängare krav?

Lagkravet är samma (1,6 mm), men:

• Rekommendation: 4 mm — vinterdäck tappar grepp snabbare under 4 mm
• Många vinterdäckstillverkare rekommenderar byte vid 4 mm
• Dubbdäck under 4 mm har betydligt sämre isgrepp

Ojämnt slitage — vad det betyder

Läs mer i däckslitage — orsaker och åtgärder.

Vanliga frågor

Kan jag få böter för dåligt mönsterdjup?

Ja. Under 1,6 mm = fordonet inte trafikdugligt. Böter + eventuellt körförbud.

Gäller 1,6 mm för hela däcket?

Ja, i hela slitbanans bredd. Om en del har 2 mm men en annan har 1,5 mm = underkänt.

Hur snabbt slits mönstret?

Beror på körstil, tryck och däckkvalitet. Generellt: ~1 mm per 10 000 km. Nytt däck (8 mm) håller alltså ~60 000–70 000 km till lagkrav.

Kontrollera din bils besiktning — mönsterdjup under 1,6 mm ger direkt underkänt. Se status via BilKoll. 📱

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