FAQs on Tire Chains
Posted: 11/14/24
Big Bear Says I Need Tire Chains…Now What?
Hooray! A new storm has brought fresh snowfall to the mountains. While you’re planning your ski weekend, it’s important to consider safety when traveling in winter conditions. Keep reading for rules and information on tire chains when travelling to Big Bear in the winter.
1. Do I really need chains? It’s not even snowing.
Yes. You will need to carry tire chains in your vehicle from November 1 to April 30 whether or not you actually use them. When CalTrans calls for chain restrictions, you will need to adhere to chain requirements. See Question 12 for levels of chain control.
As defined in Section 605 of the California Vehicle Code (CVC), tire traction devices are designed to improve vehicle traction, braking, and cornering upon snow or ice-covered surfaces. CVC
Road conditions and chain restrictions can be found on the Caltrans Quickmaps website. It is recommended that you stay up to date with road conditions as they can change quickly and without warning. Check all boxes under the Options tab then all boxes under Road Conditions for complete info.
2. How do I find the right snow chains for my tires?
Check your vehicle owner manual and your tires for specifications on chains. It’s important to buy chains and traction devices that are the correct size for your tires. Link-type tire chains that are too big will bang against the body of your vehicle causing significant damage. Chains and traction devices that are too small won’t fit around the tire at all.
3. Where can I find snow chains and traction devices?
Chains are sold at most auto supply shops, hardware stores, and some convenience stores. Call the store ahead of time to check the type of chains and traction devices they carry. Stock sells out quickly when snowy conditions exist and a vast majority of stores only sell chains and will not rent. Purchase chains before heading to mountain regions!
4. What's the difference between snow chains and traction devices?
Chains are, just that, linked chains that fit around your vehicle's tire. Traction devices - or Alternative Traction Devices - include metal cables, plastic or vinyl traction devices that are anchored to the hub cap, AutoSocks and various other options. Refer to your vehicle manufacturer guide for guidance on chain/traction sizing and specifications. Caltrans and California Highway Patrol reserve the right to prohibit any vehicle from entering a chain control area if it’s determined that traction devices do not meet CVC, Section 605 requirements.
5. Which tires do I put snow chains or traction devices on?
Chains and traction devices need to be installed on the wheels of your drive axle. Refer to your vehicle guide to determine if your vehicle is front axle or rear axle drive. All-wheel drive vehicles and 4-wheel drive vehicles may have chains installed on either drive axle, but the rear axle is preferred unless the vehicle manufacturer recommends otherwise.
6. How do you put snow chains or traction devices on?
The instructions in your chain/device kit will give you a step by step. However, if you’re a visual learner, YouTube has some great, easy-to-follow, tutorials.
7. How fast can I drive with snow chains or traction devices?
Generally, 20 to 30 MPH is the recommended speed limit for driving with chains and traction devices. This helps prevent chains and devices from breaking and potentially damaging your vehicle. Do not drive on dry roads with chains or devices as it can damage to the tire.
8. Can studded tires/snow tires replace the need to carry/install chains?
No. Though studded tires are legal in California from Nov. 1 until Apr. 30, studded tires are not considered tire traction devices and may not be used in lieu of chains or traction devices. Snow tires have the designation “Mud & Snow” or an abbreviation such as “M-S,” “M+S,” or “M/S” marked on the tire sidewall. Like studded tires, snow tires may not be used in lieu of chains or traction devices.
9. My car rental company won’t let me put chains on. Am I excused?
No. Some car rental companies may not allow chains on their inventory for various reasons, however this does not excuse you from carrying them or installing them if Caltrans requires it. You’re best bet is to rent either an all-wheel drive or 4-wheel drive vehicle for your journey.
10. The manufacturer of my vehicle recommends that chains not be installed. Am I excused?
No. Many vehicles that don't accommodate conventional link-type chains may accommodate Alternative Traction Devices. The bottom line is, if chain controls are in effect, you must comply for your safety and the safety of others.
11. I have a 4-Wheel or All-Wheel drive vehicle and I’m towing a trailer. Do I need chains?
You need to use chains if you’re towing a trailer. If the trailer has brakes, you must have at least one axle chained.
12. What do the chain control statuses - R1, R2, R3 - mean?
- R1: Chains are required on all vehicles except passenger vehicles and light-duty trucks under 6,000 pounds gross weight and equipped with snow tires on at least two drive wheels. Chains must be carried by all vehicles using snow tires. All vehicles towing trailers must have chains on one drive axle. Trailers with brakes must have chains on at least one axle.
- R2: Chains are required on all vehicles except four-wheel-drive vehicles under 6,500 pounds gross weight and equipped with snow tires on all four wheels. Chains for one set of drive wheels must be carried by four-wheel-drive vehicles using snow tires.
- R3: Chains are required on all vehicles without exception.
- R4: Road closure
Things to Remember
- It is recommended that you carry extra supplies in your vehicles such as a jack, a shovel, kitty litter, and ice scrapers to help manage snow/ice conditions.
- Carry extra food, water, and blankets in your vehicle as traffic can cause severe delays at any time of day.
- It is best to travel on a full tank of gas in case you need to reroute, and it is recommended that you keep your phone charged in case you need to find directions or call for help along the way.