Driving in snowy and icy conditions can be hazardous if you don’t take the proper precautions. One key question many drivers have is How Many Inches of Snow Require Chains? In this article, we’ll examine the various recommendations and rules regarding at what point you need to put chains on your tires when driving in heavy snow.
How Many Inches of Snow Require Chains?
Most experts agree that chains become necessary once there is enough snow accumulation on the roads to significantly impact traction and control of your vehicle. But how many inches of snowfall is that exactly? Here are some general guidelines:
3-6 Inches of Snow
Once there are 3-6 inches of accumulated snow on the roads, this is usually the point where tire chains become a smart idea. Traction will be reduced at this level of snowfall and vehicles may start to slide or get stuck without chains. Putting them on at 3 inches gives you better control.
6+ Inches of Snow
Over 6 inches of snow accumulation on the roads is when chains become crucial for safety and mobility. Traction is greatly reduced with over half a foot of snow on the ground. Vehicles often cannot get through heavy snow over 6 inches without chains. This amount of snow is when most states with snowy regions require chains.
Blizzard Conditions
In blizzard conditions with heavy snowfall, wind, and low visibility, chains should be put on vehicles right away regardless of the actual snow depth. Blizzard conditions create low traction and whiteout visibility that make chains essential.
When in Doubt, Put Them On
If you are unsure if there is enough snow accumulation to need chains, it’s best to err on the side of caution and put them on anyway. The small inconvenience of installing them is worth avoiding getting stuck without traction on snowy roads.
Chain Requirements by State
Many states, especially in snowy northern regions, have legal requirements on when chains must be used based on measured snow levels on the roads. Here are some of the chain laws by state:
Colorado
Colorado requires snow chains or traction devices like AutoSock when there is over a 4 inch depth of snow on the road and conditions are hazardous.
Washington
In Washington state, chains are required in up to 6 inches of snow, depending on what county you are driving in and current weather severity.
California
California mandates tire chains be carried in vehicles during winter months in chain control areas. They must be installed immediately if signs are posted due to unsafe snow levels on the road.
Alaska
Alaska generally requires chains or studded snow tires when there is 4-6 inches of snow on the highways. Chains must also be carried by vehicles during winter.
Vermont
Vermont’s snow chain law kicks in when roads are considered snow covered or icy enough to require chains for safe transport.
Exceptions Where Chains May Not Be Required
While the general guidelines are to put chains on starting at 3-6 inches of snow, there are some exceptions where they may not be required or recommended:
- Vehicles with high ground clearance and 4WD/AWD systems may have enough traction without chains in light 3-4 inch snowfalls. But chains are still recommended at 6+ inches even for these vehicles.
- Snow packed roads or those cleared down to pavement may not require chains at 3-4 inches since traction may still be adequate.
- Low snow areas or regions not used to winter driving may require chains at just 1-2 inches of snow since it impacts traction more significantly.
Conclusion
Determining snow chain needs depends on snowfall amounts, regional differences, road conditions, and vehicle capabilities. For most vehicles, chains become essential once there is 3-6 inches of accumulated snow on the roads. Blizzard conditions, deep snow over 6 inches, and hazardous winter driving conditions should all prompt you to immediately put chains on your tires. Following these guidelines and your state’s chain laws will keep you safe in snowy conditions. The small hassle of installing chains is worth it to avoid getting stranded without traction. Stay safe this winter by having chains ready when needed.
Key Points:
- General range is chains are recommended at 3-6 inches of snow accumulation on roads.
- Over 6 inches of snow typically mandates tire chains for safety and mobility.
- Blizzard conditions require chains regardless of actual snow depth.
- Check your state’s chain laws for specific requirements on snow levels.
- Exceptions may include capable 4WD vehicles in light snow or cleared roads.
- Take precautions and put chains on when in doubt of traction needs.
FAQs
Do I need 4 snow chains on a 4wd?
From a legal standpoint, one axle requires snow chains when navigating mountainous regions. Yet, when operating a 4 x 4 vehicle, some drivers opt for two sets of chains. While a single set usually offers sufficient traction in most situations, employing two sets offers notable advantages.
Do I need snow chains on all 4 wheels?
While it’s legally required to have snow chains on at least one axle in some areas, using them on all four wheels can significantly enhance traction and safety, especially in severe winter conditions.
Can chains damage AWD?
Chains can potentially damage AWD (All-Wheel Drive) systems if not installed correctly or if they are used on dry pavement. It’s crucial to follow manufacturer recommendations and only use chains when necessary in slippery or icy conditions to minimize the risk of damage.
How long do snow chains last?
The lifespan of snow chains can vary depending on usage and conditions. On average, properly maintained snow chains can last for several seasons of winter driving, but it’s important to inspect them regularly for signs of wear and damage to ensure safety.