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The word tread is often used casually to refer to the pattern of grooves molded into the rubber, but those grooves are correctly called the tread pattern, or simply the pattern. The grooves are not the tread, they are in the tread. This distinction is especially significant in the case of racing slicks, which have much tread but no grooves.
The tread is a thick rubber, or rubber/composite compound formulated to provide an appropriate level of traction that does not wear away too quickly. [71] The tread pattern is characterized by a system of circumferential grooves, lateral sipes, and slots for road tires [26] or a system of lugs and voids for tires designed for soft terrain or ...
Zigzag sipes on tire tread. Siping is a process of cutting thin slits across a rubber surface to improve traction in wet or icy conditions.. Siping was invented and patented in 1923 under the name of John F. Sipe.
Tread compounds include additives to impart wear resistance and traction in addition to environmental resistance. Tread compound development is an exercise in compromise, as hard compounds have long wear characteristics but poor traction whereas soft compounds have good traction but poor wear characteristics.
M+S, or M&S: Mud and snow; A tire that meets the Rubber Manufacturers Association (RMA) and Rubber Association of Canada (RAC) all-season tire definition. [20] These are commonly found on all-season tires, with self-cleaning tread and average traction in muddy or very snowy conditions, and for low temperatures.
Shoe tread, pattern on the bottom of a shoe; Stair tread, horizontal portion of a set of stairs on which a person walks; Tire tread, patterned outer surface of a tyre that makes contact with the road; Tread (river terrace), the level section of a river terrace; Continuous track, a system of vehicle propulsion used in tracked vehicles
Protrusions molded into rubber tractor tire treads are known as lugs, as are cleats for round wheels, [citation needed] which perform a similar function. Unlike metal grousers, these rubber tire treads or crawler-track shoes/pads may be more suitable for driving on roads. [7] Grousers on a captured World War I British tank.
An open, deep tread, with a high void ratio between rubber and spaces between the solid rubber; Shoulder blocks, a specialized tread design at the outside of the tire tread to increase snow contact and friction; A narrower aspect ratio between the diameter of the tire and the tread width to minimize resistance from the plowing effect of the ...