Snow Chains

Q: How do I choose the right size?

Match the chain to the exact tyre dimension and check the vehicle minimum tyre-to-body clearance, so it fits and turns without fouling the bodywork.

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What snow chains do trucks and trailers need?

Snow chains are traction devices fitted over tyres to provide grip on snow and ice, and they are legally required on many Alpine and Nordic routes in marked winter conditions. Because commercial vehicles vary, truck chains are selected by tyre size, pattern and link thickness, and quality units are made to recognised anti-skid standards such as EN 16662-1 — the harmonised European standard for tyre chains. In general, ladder patterns give strong straight-line traction and durability for heavy vehicles, whereas diamond patterns give smoother handling and better lateral grip. In addition, thicker links (about 7–9 mm) suit heavy trucks, while thinner links suit vans and trailers with limited clearance. Therefore, always match the chain to the exact tyre dimension and the vehicle’s minimum clearance.

Patterns and link sizes compared

Because grip needs differ by vehicle, the table below compares the main patterns and link sizes.

Pattern / link	Grip characteristic	Typical use
Ladder	Strong forward and braking traction; robust	Trucks, buses, heavy haulage
Diamond / rhombus	Smoother ride; better lateral stability	Vans, coaches, trailers
Link 7–9 mm	Maximum durability and grip	Heavy trucks, high mileage
Link ≤6 mm	Low clearance; lighter	Vans, trailers, limited arch space

Match the chain to the exact tyre dimension and check the minimum clearance before fitting.

Snow chains — frequently asked questions

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Are truck snow chains a legal requirement? On many Alpine and Nordic routes, they are mandatory in marked winter conditions. Therefore, carrying chains made to recognised standards such as EN 16662-1 avoids fines and route closures.

Ladder or diamond pattern? Ladder chains give the strongest straight-line and braking grip for heavy trucks, whereas diamond patterns give smoother handling and better lateral traction for lighter vehicles.

How do I choose the right size? First, match the chain to the exact tyre dimension. Then check the vehicle’s minimum tyre-to-body clearance, so it fits and turns without fouling the bodywork.