Sae class s vehicle

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  • Only use tire chains when there is at least one inch of snow on the road. The best time to put them on is usually during or after a snowstorm.
  • You can also use chains in muddy driving conditions. But be sure to remove the chains when you return to regular roads to protect your vehicle's tires and the road surface.
  • You will need to drive a little bit slower when you have tire chains on your tires. We recommend driving 30 miles per hour or slower. In addition, try to not brake hard or accelerate fast when using them.
  • Make sure you purchase the right size because if they don't fit well, they may cause an accident. The best car chains will perform better than winter tires because they are thicker than tire tread and firmly grip the road surface.
  • Consider keeping two sets of tire chains and/or cables in your vehicle at all times, especially if you live in an area that gets a lot of snow. That way, if something breaks you will have a backup.
  • Understand that chain-sizing tables are approximate. After testing their fit on your vehicle, drive a short distance and check the fit once again. They may settle differently on the tires after you drive with them.


Q. Do chains ruin your tires? 

On snow or ice, chains are fine for your tires. If you’re driving on pavement and dry ground, you can harm both the road and your tires. Take the chains off if you encounter a road that’s been thoroughly plowed to prevent damage. In cold weather, both the metal chains and your tires are more vulnerable to damage. Exercise extra caution. 

Q. How fast can you drive with chains on? 

Because you’re using snow chains in already challenging road conditions, don’t go too fast. Stick to 30 miles per hour (maximum) to prevent any problems. Chains make it more difficult to brake, especially if the surface is dry. Slower speeds help avoid issues. 

Q. What can I use instead of snow chains? 

Alternatives to snow chains include traction aids like the Tracgrabber Tire Traction Device. It goes over the tire laterally and improves grip while covering minimal surface area. These help you if the vehicle gets stuck. Options like the Autosock Tire Chain Alternative completely cover the tire with a textile.

Q. Is it okay to leave snow chains on overnight? 

There should be no issue leaving tire chains on overnight. They won’t damage your tires and it won’t compromise the fit of the chains themselves. If the temperature drops significantly overnight, give metal chains a chance to acclimate to the cold before driving extensively on them. 

Q. Are tire chains legal in every state?

The law varies from state to state. Many allow them during certain periods of the year on certain roads. 

Q. Can I use tire chains on any type of vehicle? 

Be sure to check with the manufacturer's recommendations. Usually, cars that have little tire clearance are not good candidates for tire chains. There also may be other mechanical reasons why tire chains won't work on certain vehicle models.

Q. Do I need tire chains if my vehicle has antilock brakes? 

Yes. Antilock braking systems prevent vehicles from skidding. ABS does not have anything to do with tire chains, which enable a driver to have more control over snow and ice.

Q. Are snow socks a good substitute for tire chains? 

Snow socks are an alternative, but they may not be as effective as tire chains. This is especially true when hard-packed snow is involved. Vehicles with little tire clearance may benefit from snow socks instead of tire chains.

Q. Where do I find the size of my tires? 

Information about your tires is on the tire sidewall above the rim. The first three digits indicate tire width. The second set of double digits indicates the tire height ratio. The third set of double digits indicate diameter.

Q. How thick should my tire chains be?

There needs to be enough clearance between your tire and the body of your vehicle. A typical passenger vehicle usually has a lot of clearance. SUVs, trucks, and minivans often have a little less clearance. Sports cars and vehicles that are lowered have the smallest amount of clearance and probably should not have tire chains on them.

Q. How many tire chains do I need?

It depends. Many people just use snow chains on the wheels that are used for traction.

Final Thoughts

Ready to face that next big snowstorm with a quality set of tire chains? The Glacier Passenger Cable Tire Chain Set is rugged and durable, while the value of the Peerless Chain AutoTrac Passenger Chains ensures lasting benefits. There’s a winter traction solution out there for every vehicle, helping you stay safe on the road. 


Snow chains

Devices fitted to the tires of vehicles to improve traction on snow and ice

Automatic tire chains are permanently mounted near the drive tires and engage by turning a switch, then move into position to fling the pieces of chain under the tires automatically. Automatic chains were invented in in the United States[1]and Sweden in

Snow chains, or tire chains, are devices fitted to the tires of vehicles to provide maximum traction when driving through snow and ice.

Snow chains attach to the drive wheels of a vehicle or special systems deploy chains which swing under the tires automatically. Although named after steel chain, snow chains may be made of other materials and in a variety of patterns and strengths. Chains are usually sold in pairs and often must be purchased to match a particular tire size (tire diameter and tread width), although some designs can be adjusted to fit various sizes of tire. Driving with chains reduces fuel efficiency, and can reduce the allowable speed of the automobile to approximately 50&#;km/h (30&#;mph), but increase traction and braking on snowy or icy surfaces. Some regions require chains to be used under some weather conditions, but other areas prohibit the use of chains, as they can deteriorate road surfaces.


Snow chains were invented in by Harry D. Weed in Canastota, New York. Weed received U.S. Patent 0,, for his "Grip-Tread for Pneumatic Tires" on August 23, [2] Weed's great-grandson, James Weed, said that Harry got the idea of creating chains for tires when he saw drivers wrap rope, or even vines, around their tires to increase traction on muddy or snowy roads, which were very common at the turn of the 20th century.[citation needed] (At this time, most people in rural Northern regions wouldn't bother driving automobiles in the winter at all, since roads were usually rolled[3] for use with horse-drawn sleighs, rather than plowed. Automobiles were generally not winter vehicles, for a variety of reasons until the s or s in some areas. Only in urban areas was it possible to remove snow from streets.) He sought to make a traction device that was more durable and would work with snow as well as mud.[4]

In July , the Canadian Auguste Trudeau obtained a patent for his tread and anti-skidding chain.[5]


In snowy conditions, transportation authorities may require that snow chains or other traction aids be installed on vehicles, or at least supplied for them. This can apply to all vehicles, or only those without other traction aids, such as four-wheel drive or special tires. Local requirements may be enforced at checkpoints or by other type of inspection. Snow chains should be installed on one or more drive axles of the vehicle, with requirements varying for dual-tire or multi-driven-axle vehicles that range from "one pair of tires on a driven axle" to "all tires on all driven axles", possibly also one or both steering (front) wheels, requiring snow chains whenever required by signage or conditions.

In case of running wheel loaders, it is recommended to use special protection chains due to intense pressure on tires during work.[6]

United States[edit]

Tires come with standardized tire code sizing information, found on the sidewalls of the tires. The first letter(s), indicate the vehicle type (P for passenger, LT for light truck). The next three digits indicate the tire's width in millimeters. The middle two digit number indicates the tire's height-to-width ratio. The next character is a letter "R", which indicates radial ply tires (rather than radius). followed by a final two digit number indicating the rim size for the vehicle's wheels.

Additionally, the correct Society of Automotive Engineers (SAE) class of snow chains must be installed, based on the wheel clearance of the vehicle.

SAE traction device class Minimum tread-face clearance (A) Minimum side-wall clearance (B)
Class S &#;in (37&#;mm) &#;in (15&#;mm)
Class U &#;in (50&#;mm) &#;in (23&#;mm)
Class W &#;in (64&#;mm) &#;in (38&#;mm)

The SAE Class "S" well clearance is a common requirement on newer cars, especially if after-market wider, low-profile, or larger tires and/or wheels are fitted.

The classes are defined as follows:[7]

  • SAE Class S: Regular (non-reinforced) passenger tire traction devices for vehicles with restricted wheel well clearance.
  • SAE Class U: Regular (non-reinforced) and lug-reinforced passenger tire traction devices for vehicles with regular (non-restricted) wheel well clearances.
  • SAE Class W: Passenger tire traction devices that use light truck components, as well as some light truck traction devices.

Common chain failures[edit]

  • Driving too fast with chains. Recommended maximum speeds in the owners' manual of the chains – generally 30 to 50&#;km/h (20 to 30&#;mph) – maximum.
  • Driving on dry roads with chains for extended periods of time.
  • Driving on dry roads with chains can cause a vehicle to slide when braking.
  • Driving on dry roads with chains will rapidly wear the chains.
  • Not securing the chains tightly enough. Owners' manual of the chains recommends tightening a second time after driving a short distance and checking for tightness from time to time. If a chain comes loose, it should either be refastened or removed before it wraps around the drive axle of the vehicle.
  • Tensioners or adjusters may be required. (Some chains have automatic tensioners and may be damaged if tensioners are used.)
  • Installing chains on non-drive wheels.
  • Accelerating too rapidly causing tire spin and stress on chains
  • If a chain does break, it can cause vehicle damage by slapping around inside the wheel well, possibly wrapping around the axle and severing brake lines

Varieties and alternatives[edit]

Cable chains on a car tire, with a relatively simple and easy-to-secure design; this is a ladder-type design
Cable chains on a bus tire

Tire chains are available in a variety of types that have different advantages of cost, ride smoothness, traction, durability, ease of installation, and recommended travel speed.

Materials include steel (in the form of links or cables), polyurethane, rubber, and fabric. The original-style steel-link chains are also available in a variety of carbon steel and steel alloys and link shapes. Link shapes include standard, twisted, square, and reinforced.[8] The shape of the links changes the flexibility, grip, and strength of the chain. The links can also have added studs or V-bars for an even more aggressive traction. The use of alloy steel and hardened steel adds durability. Traction cables (cable chains, snow cables) attach like chains but are made from cable rather than chain.

Chain patterns include the ladder, diagonal, or pattern types. Ladder type chains have cross chains perpendicular to the road and look like a ladder when carefully laid on the ground. With diagonal chains, the cross chains are diagonal to the road. Pattern types form a "net" over the tire such as a diamond or multiple diamond pattern. Some industrial pattern types also include studded, metal rings to which the chains attach and thus are called ring chains.

Most tire chains are wrapped around the circumference of the tires and held in place with rim chains, which may be chain or cable, elastic or adjustable tensioners. Automatic chains do not wrap around the tire but swing under the tire from devices permanently mounted under the vehicle which deploy via an electronic solenoid activated in the cab. Some tire chains mount onto the tires from only one side. Others use a ratcheting system for easier installation.

Alternatives include studded tires, which are snow tires with metal studs individually mounted into holes in the treads; emergency traction devices which may be

  • [[]] to tire chains but mount around the tire through openings in the rim; and snow socks, which are fabric rather than chain or cable. These allow higher operating speeds and don't require the operator to install them (studs), but chains generally give the best traction in severe conditions.

Mud chains are similar to snow chains but for off-road, four-wheel drive applications, and generally they are larger than snow chains; they are often seen on heavy off-road equipment like log skidders, which have to operate over very rough, muddy terrain.

Wheel tracks are heavy duty assemblies similar to chains but with rigid cross links such as sometimes used on logging equipment.

Legality of use[edit]

Laws vary considerably regarding the legality of snow chain use. Some countries require them in certain snowy conditions or during certain months of the year, while other countries prohibit their use altogether to preserve road surfaces.[9]

See also[edit]


External links[edit]

  1. La z boy slipcovers
  2. Spider web elbow tattoo
  3. Pearlescent floor coating kit

What is an SAE Class S vehicle?

The SAE Class &#;S&#; well clearance is a common requirement on newer cars, especially if after-market wider, low-profile, or larger tires and/or wheels are fitted. The classes are defined as follows: SAE Class S: Regular (non-reinforced) passenger tire traction devices for vehicles with restricted wheel well clearance.

Which is better chains or cables for tires?

Actual tire chains are better than cables. Chains offer better traction and longer life. They also seem to be more corrosion resistant. Cables are generally smaller but there are some chains that meet the Class S requirements for vehicles with limited clearance.

Can I use cables instead of chains?

Unlike snow chains, the cables don&#;t have the required speed limitations but they are also not as durable either. So, if you have a passenger that only requires the aid of chains or cables every once and a while, then tire cables could be the better way to go.

Do tire cables work on ice?

Depends on what you mean by ice , chains are good for deep snow and ice but a paved road with say black ice on it not so much. You would be much farther ahead with a good set of snow tires. They will get you anywhere you want on regular roads unless chains are required by law.

Do studded tires work on black ice?

Studded tires provide some traction on ice but have limits,you can&#;t expect to be able to go very fast. Traction on slush depends on the depth of it and how fast you are going and the temperature . Studded tire work on solid ice including black ice. They pierce the ice and grip.

What happens if you hit black ice?

Deal with a black ice encounter. If you do hit black ice, your first reaction must be to remain calm and avoid overreacting. The general rule is to do as little as possible and allow the car to pass over the ice. Do not hit the brakes, and try to keep the steering wheel straight.

Do roads freeze at 32 degrees?

When Do Roads Ice Over? The freezing point of water is 32 degrees Fahrenheit. While the air temperature rests above 32 degrees Fahrenheit, the actual ground temperature could sit below this number. This is especially dangerous on clear nights when the surface temperatures lose heat quicker than the surrounding air.

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