Snow socks (also known as auto socks) are

textile Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not the ...

alternatives to

snow chains Snow chains, or tire chains, are devices fitted to the tires of vehicles to provide increased 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 ...

. Snow sock devices wrap around the

tires A tire (American English) or tyre (British English) is a ring-shaped component that surrounds a Rim (wheel), wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide Traction (engineering), t ...

of a

vehicle A vehicle (from la, vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses, mobility scooters for disabled people), railed vehicles (trains, trams), wa ...

to increase traction on snow and ice. Snow socks are normally composed of a

woven fabric Woven fabric is any textile formed by weaving. Woven fabrics are often created on a loom, and made of many threads woven on a warp and a weft. Technically, a woven fabric is any fabric made by interlacing two or more threads at right angles to on ...

with an

elastomer An elastomer is a polymer with viscoelasticity (i.e. both viscosity and elasticity) and with weak intermolecular forces, generally low Young's modulus and high failure strain compared with other materials. The term, a portmanteau of ''elastic p ...

attached to the inner and/or outer edge. The woven fabric covers the

tire tread The tread of a tire or track refers to the rubber on its circumference that makes contact with the road or the ground. As tires are used, the tread is worn off, limiting its effectiveness in providing traction. A worn tire can often be retrea ...

and is the contact point between the vehicle and the road. The elastomer keeps the snow sock in place and facilitates with installation. Some snow sock models have an additional component that covers the rim of the tire, which prevents snow or

debris Debris (, ) is rubble, wreckage, ruins, litter and discarded garbage/refuse/trash, scattered remains of something destroyed, or, as in geology, large rock fragments left by a melting glacier, etc. Depending on context, ''debris'' can refer to ...

from gathering between the tread of the tire and the inner side of the woven fabric. Snow socks for cars

Sizing and deployment

Snow socks are sold in pairs and come in sizes that are specific to a range of tire codes. Snow sock sizes are available for different

motor vehicle A motor vehicle, also known as motorized vehicle or automotive vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on Track (rail transport), rails (such as trains or trams) and is used for the transportation of pe ...

classes, but most snow sock brands focus on

cars A car or automobile is a motor vehicle with wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods. The year 1886 is regarded as t ...

and

pickup trucks A pickup truck or pickup is a light-duty truck that has an enclosed cabin, and a back end made up of a cargo bed that is enclosed by three low walls with no roof (this cargo bed back end sometimes consists of a tailgate and removable covering) ...

rather than

semi-trailer trucks A semi-trailer truck, also known as a semitruck, (or semi, eighteen-wheeler, big rig, tractor-trailer or, by synecdoche, a semitrailer) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer a ...

or larger vehicles. Since the largest variation of snow socks is in the market for cars and pickup trucks, wide or low-profile tires are often covered.

Buses A bus (contracted from omnibus, with variants multibus, motorbus, autobus, etc.) is a road vehicle that carries significantly more passengers than an average car or van. It is most commonly used in public transport, but is also in use for cha ...

, semi-trailer trucks or larger vehicles require snow sock models that can support the heavier axle load and larger wheel dimensions. Some brands also offer snow socks for specialized vehicles such as

forklifts A forklift (also called lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various ...

or airport

ground support equipment File:Qatar Airways Airbus A380-800 at Heathrow Airport Terminal 4 before Flying to Doha, 6 Jan 2015.jpg, Qatar Airways Airbus A380-800 on apron outside Heathrow Terminal 4 with a wide range of ground handling equipment around such as aircraft con ...

(e.g. pushback tugs or loaders). Driving with snow socks usually reduces the maximum allowable speed to between and depending on the snow sock brand, snow sock size and vehicle class. These restrictions are normally stated in the product's or vehicle's owner’s manual. Neither snow socks nor snow chains are considered direct substitutes to

snow tires Snow tires, also known as winter tires, are tires designed for use on snow and ice. Snow tires have a tread design with larger gaps than those on conventional tires, increasing traction on snow and ice. Such tires that have passed a specific win ...

Legality of use

During inclement weather, regions may invoke snow chain laws as a precautionary measure. Snow socks are generally not considered a legal equivalent to snow chains, though some brands are individually approved. If snow chains are prohibited, snow socks without metal components may be permitted. This depends on local

legislature A legislature is an assembly with the authority to make law Law is a set of rules that are created and are enforceable by social or governmental institutions to regulate behavior,Robertson, ''Crimes against humanity'', 90. with its p ...

Textile snow socks

This is a cover in textile that covers the tire and insulates the tire from snow. They do not disturb safety systems ( ABS,

ESP ESP most commonly refers to: * Extrasensory perception, a paranormal ability ESP may also refer to: Arts, entertainment Music * ESP Guitars, a manufacturer of electric guitars * E.S. Posthumus, an independent music group formed in 2000, ...

) or damage aluminum rims. One important component is

polyester Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include natural ...

. The fibres absorb the water and improve grip. They have been used safely up to .

Snow socks made of composite materials

Michelin Michelin (; ; full name: ) is a French multinational tyre manufacturing company based in Clermont-Ferrand in the Auvergne-Rhône-Alpes ''région'' of France. It is the second largest tyre manufacturer in the world behind Bridgestone and la ...

manufactures a composite snow sock called Easy Grip. It is coupled with an inner elastic band to facilitate installation. To strengthen the tread and maximize road holding there are 150 galvanised steel rings.

Benefits of snow socks

Snow socks offer added benefit in that they do not disturb the safety systems on a vehicle such as ESP or ABS. Snow socks with a high polyester count absorb more surface water from the road improving grip and allowing driving at speeds up to .

References