Snow chains are not a winter standard, but a special tool for a few, yet critical, situations. This guide will show you when chains are even mandatory, what types of chains exist, how to find the right size via tire designation, why clearance in the wheel arch is the most frequently overlooked point – and whether buying or renting is worthwhile for you. Legal status and review date: August 2026, Germany.
A note upfront regarding our own business: zrshop does not carry snow chains. This article is purely a guide without product sales. However, the topic still fits our assortment – because whether chains can even be mounted on your car depends on the wheel-tire combination.
1. When are snow chains necessary?
The direct answer: In Germany, there is no general snow chain obligation in winter. Chains are only mandatory where expressly required – by traffic sign 268 "Snow chains mandatory" (blue circular sign with a wheel with chain, Appendix 2 to the StVO). If this sign is present, you may only drive on the affected section with snow chains fitted – and on at least two drive wheels. Winter tires alone are not sufficient, not even the best ones.
To be distinguished from this is the situational winter tire obligation according to § 2 para. 3a StVO: In black ice, snowy conditions, slush, ice or hoarfrost, a motor vehicle may only be driven with tires marked as winter tires. Today, the Alpine symbol (3PMSF, mountain pictogram with snowflake) is decisive; the previous transitional regulation for pure M+S tires has expired. This obligation depends on the weather, not the calendar and not a sign. Conversely, the chain obligation depends exclusively on the sign, not on the weather.
In short:
- Winter conditions, no sign: Winter tires with the Alpine symbol are mandatory, chains are optional.
- Sign 268 posted: Chains are mandatory – regardless of how good your tires are.
- Sign 268 with additional sign: Additional signs can restrict the regulation (e.g., to certain types of vehicles). Always read them carefully.
Practically, this is only relevant for most drivers in a few cases: Alpine and low mountain range passes, access roads to ski resorts, steep forest and farm tracks, construction sites or company premises in mountainous regions. Those who commute in the lowlands will almost never see sign 268. Those who regularly drive at higher altitudes, however, should have chains with them before they need them – stopping on a snowy incline and then realizing that the chains are missing or don't fit is the classic starting point for a long evening.
Important for expectations: chains do not replace winter tires. They are a supplement for short, very difficult sections on snow or ice-covered roads. On clear roads, they must be removed – otherwise, you will damage the chain, tire, and road surface. How to keep your tires winter-ready is explained in the guide All-Terrain Tires in Winter & Snowflake Symbol and, for the opposite direction, in Driving Winter Tires in Summer.
2. Chain types compared
"Snow chain" is a collective term. The designs differ primarily in how the chain net is guided over the tread – and this results in differences in traction, running smoothness, and mounting effort.
| Type | Purpose | Traction | Mounting effort | Limitations |
|---|---|---|---|---|
| Ladder chain (crossbars) | occasional use, starting aid, short climbs | good longitudinally (drive/brake), weaker laterally | low to medium | noticeable rough running, less lateral grip |
| Diamond chain / diagonal cross | more frequent use, mountain roads, longer stretches | evenly longitudinal and lateral | medium | usually more complex and heavier than ladder chains |
| Ring chain / net chain (dense net) | severe conditions, commercial vehicles, continuous operation in snow | very high, very even | high, sometimes heavy weight | requires a lot of clearance in the wheel arch, unsuitable for many cars |
| Textile snow sock (fabric cover) | emergency solution, very tight wheel arches, short distances | decent on snow, significantly weaker on ice | very low | high wear, sensitive to asphalt contact; legal equivalence with "snow chains" not clear |
Two points on this that are often overlooked in brochures:
Chain link thickness: In addition to the design, the link thickness determines whether a chain fits into your wheel arch. Car chains typically have a link thickness of a few millimeters; so-called fine-link chains are deliberately built flat so that they still work even with limited internal clearance between the tire and the strut. Coarse-link chains with more traction reserve require correspondingly more space. The vehicle manufacturer often specifies a maximum permissible protrusion or explicitly "fine-link chains only" in the manual – this information is binding, not the desire for more grip.
Textile solutions: Snow socks are quick to fit and require almost no installation space – making them interesting for vehicles with very tight wheel arches. However, whether they legally meet the requirements of sign 268 is not clearly regulated and is not handled uniformly everywhere. If you plan to drive into an area with a chain requirement, real chains are the safe choice; the textile variant remains more of a reserve for when nothing else can be fitted.
3. Finding the right size – based on the tire, not the rim
The most common incorrect purchase occurs at this point: The chain size is determined by the tire size, not the rim. The chain wraps around the tread and the tire sidewalls – so the width, aspect ratio, and rim diameter of the mounted tire are crucial. Two cars with identical 18-inch rims may require different chain sizes if the tire width varies.
The necessary values are on the tire sidewall, for example 235/55 R18 100V:
- 235 = tire width in millimeters,
- 55 = aspect ratio in percent (cross-section),
- R18 = radial construction, rim diameter 18 inches.
You need exactly these three specifications for the chain manufacturer's chain table. How to read the complete designation including load and speed index is explained in the guide Reading Tire Size and Tire Designation. The connection between rim width and permissible tire width – important when you are first determining the combination – can be found in Rim and Tire Width.
Three practical rules for finding the size:
- Always use the actual mounted size, not the one primarily listed in the vehicle registration document. If you switch to a different dimension in winter, you need the appropriate chain for that dimension.
- Check front and rear axles. With mixed tires, the sizes differ; the chain must match the axle on which it is to be used.
- Do not buy a "nearly fitting" size. A chain that is too large cannot be properly tensioned and will flap; one that is too small either cannot be closed or puts undue stress on the tire sidewall.
4. Clearance – the point that concerns your rims
Even if the chain mathematically fits the tire size, it doesn't mean it can be used on your car. Not every vehicle allows snow chains on every wheel-tire combination. Decisive is the free space that the chain additionally occupies in the wheel arch – internally towards the strut, brake, steering and suspension components, externally towards the wheel arch edge.
Here, two measurements come into play that many wheel owners change when tuning:
- Tire width: The wider the tire, the further the chain net moves in both directions – the clearance shrinks on both sides simultaneously.
- Offset (ET): The ET determines how far the wheel sits in the wheel arch. A large ET pulls the wheel inwards – where it becomes tight for the chain at the strut and axle parts. A small ET pushes the wheel outwards – then the chain can rub against the wheel arch edge or inner lining, especially when compressing and at full steering lock.
What exactly the ET does and how to read it on your rim is explained in the Offset Guide. Those who want to use larger inch dimensions will find the correlations to tire cross-section and rolling circumference in the 18-inch Rim Guide.
Therefore, vehicle manufacturers specify a chain-compatible alternative size for many models: a narrower wheel-tire combination, often on a smaller rim diameter and with a different offset, where the chain runs freely and safely. If the manual states something like "snow chain operation only permitted with size X", this is not a recommendation, but the manufacturer's operating instruction. This is exactly why many drivers fit a second, narrower wheel set for winter anyway – it is cheaper to wear, often chain-compatible and makes seasonal changes easier. More on this in the Winter Complete Wheels Guide.
Practical check sequence before ordering a chain:
- Vehicle manual: Is snow chain operation even permitted? For which sizes? Which axle? Maximum protrusion or fine-link requirement?
- Your current tire size: read from the sidewall, do not estimate.
- Chain manufacturer's table: suitable chain size for exactly this tire size and design.
- Dry run: Mount the chain once in the garage, turn the wheel manually or by slowly rolling and check that nothing rubs – even with the wheels turned.
If your vehicle does not provide for chain operation for the mounted combination, no chain in the world will solve the problem. Then only switching to the approved size remains – or avoiding the route where sign 268 is present. No one can give you a safety guarantee remotely; the vehicle manual and manufacturer's approval for your specific model are always decisive.
5. Step-by-step installation
Never install chains for the first time in the dark on a mountain. A dry run at home saves real time in an emergency – and it uncovers clearance problems before they become expensive.
- Stop safely: as level and firm ground as possible off the lane, hazard lights, warning vest, handbrake, gear or park position engaged. In case of gradient, secure additionally.
- Prepare: Put on gloves, untangle the chain and spread it flat in front of the wheel. The fasteners should be positioned so that they are easily accessible later.
- Guide the chain behind the wheel: connect the tensioning or forming bracket behind the tire so that it is at the top on the inside.
- Close at the front: Pull the chain net evenly over the tread, close the fastener on the outside, tighten the tensioning element.
- Check fit: Net centered on the tread, no chain strands twisted, nothing resting on the sidewall, no part hanging loose.
- Drive a short distance and re-tension: stop after a few dozen meters and re-tension the chain. This is not an optional step – chains always settle after the first roll.
Typical mistakes
- Not re-tensioned. A loose chain hits the wheel arch, brake line, and fender – this is the most common damage in chain operation, and it happens in the first few minutes.
- Wrong axle. Chains belong on the drive axle: front for front-wheel drive, rear for rear-wheel drive. For all-wheel drive, the manual specifies which axle is intended – there is no universally applicable rule here.
- Chain on the wrong tire size. Left over from the previous year, borrowed from family, "should fit" – if it doesn't fit exactly, the chain cannot be properly tensioned.
- Driven too fast. See next section: chains are slow-driving equipment.
- Continued driving on a clear road. As soon as the road is free of snow and ice, the chains must be removed. Asphalt contact quickly destroys them and stresses tires and chassis.
- Electronics ignored. In very low traction, it may be useful to temporarily reduce traction control, if the manual provides for it – but only deliberately and only there, not as a permanent state.
Before the winter season, also check tread depth and air pressure. Chains on worn tires are a bad combination, as the tire then provides hardly any grip itself. Instructions on this: Measuring Tread Depth and Setting Tire Pressure Correctly.
6. Speed limit with snow chains
In Germany, the rule is: A maximum of 50 km/h is allowed with snow chains (§ 3 StVO). This is a construction-related upper limit for chain operation and applies regardless of what signage might otherwise permit – on a country road with a 100 km/h limit, you still only drive 50 with chains. In practice, even that is often too fast on snow and ice; the chain noticeably changes driving behavior, steering and brakes react differently, and the noise level disguises the actual speed.
Many chain manufacturers also specify their own, sometimes lower, maximum speed for their product. If both apply, the lower value is decisive.
What penalties are to be expected can only be generally stated: Both disregarding the mandatory chain requirement (sign 268) and exceeding 50 km/h with chains are administrative offenses and will be punished with a warning or fine; if this obstructs others, the penalty will be higher. The specific amounts are listed in the applicable catalog of fines and change – check them there if in doubt. Regardless of the fine, a violation in the event of an accident can raise the question of contributory negligence. This is the more practically important point.
Different rules apply abroad – sometimes different speed limits, sometimes temporary obligations to carry or equip, sometimes their own testing standards for chains. Before traveling, it is best to check with the official authorities of the destination country. Do not transfer German rules to neighboring countries without verification.
7. Buy or rent?
Both are legitimate – the decision almost solely depends on the frequency of use and how predictable your journeys are. We deliberately do not name providers here; the criteria are general.
| Situation | Better to buy | Better to rent |
|---|---|---|
| Trips to chained areas | several times per winter or living in mountainous regions | one vacation per year or less often |
| Vehicle change | Vehicle remains for several years | frequently changing or rented vehicles |
| Tire size | stable, one fixed winter set | changing dimensions, rental cars |
| Predictability | short-term winter operations possible | Date is set long in advance |
| Storage space | available, dry | tight, no storage possibility |
Those who buy have the chain with them in an emergency, can try it on comfortably at home, and know the steps. Those who rent must check their own tire size and the vehicle's approval beforehand – a rented chain of the wrong size is useless. When renting, make sure that completeness and condition are checked before departure and that assembly instructions are included. And in both cases: practice once dry before you start.
8. After use: clean, dry, store
Snow chains are wear parts, but they will last many seasons if properly maintained after use. The biggest enemy is road salt combined with residual moisture.
- Rinse: After each use, rinse the chain with clear, preferably warm water until no salt film is noticeable.
- Dry: Let them dry completely before putting them in the bag – spread out, not crumpled.
- Preserve: Lightly oil steel parts or treat them with a suitable corrosion protection. Observe manufacturer's instructions, especially for systems with plastic or textile components – not every product is compatible with these.
- Check: Inspect fasteners, tensioning elements, and chain links for wear, cracks, and bent links. Do not continue to use damaged chains.
- Store: Dry, dark, and frost-free, in the accompanying bag – and in such a way that you can find them again when needed.
Textile snow socks should be washed according to the manufacturer's instructions and dried flat; they do not tolerate residual salt or heat. During the same garage check, it's worth taking a look at the wheels themselves: road salt also attacks rim surfaces. Instructions can be found in Cleaning and Maintaining Rims and Changing and Storing Wheels.
FAQ: Snow Chains
Do I need snow chains if I have winter tires?
Normally not. Winter tires with the Alpine symbol fulfill the situational winter tire requirement. However, if sign 268 "Snow chains mandatory" is displayed, winter tires are not sufficient – chains on at least two drive wheels are then mandatory.
Which axle should snow chains be on?
On the drive axle: front for front-wheel drive, rear for rear-wheel drive. For all-wheel drive vehicles, the vehicle manufacturer specifies which axle is intended – this can be found in the vehicle manual.
How fast can I drive with snow chains?
In Germany, a maximum of 50 km/h. If the chain manufacturer specifies a lower value, that value applies. On snow and ice, significantly slower is usually appropriate anyway.
Do snow chains fit every rim?
No. The chain size depends on the tire size, and there must also be enough clearance in the wheel well. For wide tires and unfavorable offset, vehicle manufacturers often specify a chain-compatible alternative size. The vehicle manual is always decisive.
Are snow socks an equivalent alternative?
They are quick to install and require little space, but they provide less grip, especially on ice, and wear out quickly. Whether they legally meet the requirements of sign 268 is not clearly regulated – when chains are mandatory, real chains are the safe choice.
Can I mount snow chains on all-season tires?
Basically yes, provided the chain fits the mounted tire size and the vehicle allows chain operation for this combination. The type of tire does not change the size logic – tire size and clearance are decisive.
9. Conclusion and next step
Snow chains are mandatory only where sign 268 is displayed – otherwise, they are a voluntary reserve for difficult mountain roads. Those who purchase them choose the type according to the frequency of use, the size according to the tire designation, and first check whether the vehicle even allows chain operation on the mounted wheel-tire combination. After that: mount them dry once, adhere to 50 km/h, rinse after use, and store dry.
For clarification: zrshop does not carry snow chains. What we provide is the basis underneath – the right wheel-tire combination for winter. A narrower, approved winter wheel set is in many cases a better investment than a chain that won't run freely on wide summer wheels anyway.
Discover winter tires at zrshop → · Tires · 17-inch complete wheels · 18-inch complete wheels · Steel wheels · Off-road tires
Related articles
Sources and status
- Road Traffic Act (StVO), § 2 Para. 3a – situational winter tire requirement, labeling of winter tires (Alpine symbol / 3PMSF)
- Road Traffic Act (StVO), § 3 – maximum speed of 50 km/h when driving with snow chains
- Road Traffic Act (StVO), Annex 2 – sign 268 "Snow chains mandatory"
- Vehicle manual and manufacturer specifications of the respective vehicle – permissibility of chain operation, chain-compatible wheel-tire sizes, drive axle
- Information from chain manufacturers – size charts, link thickness, product-related maximum speed (manufacturer's specification, interest-driven)
View winter tires in the ZR Shop
Note: Legal status and check date: August 2026, Germany. Fine amounts are based on the currently applicable catalog of fines. This article does not replace legal advice or vehicle-specific checks.