The tread of a tire or caterpillar track refers to the pattern visible on its circumference that makes contact with the road. As tires are used, the tread is worn down limiting their effectiveness in providing traction. A worn tire tread can be replaced with a process known as retreading. Image File history File linksMetadata Download high-resolution version (3456x2304, 3492 KB) Tire tread Author: Ambiguous @ Flickr File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Tread Shore durometer Metadata This file contains additional information, probably added from the... A tire or tyre (see spelling differences and etymological origins) is a device covering the circumference of a wheel. ... U.S. M60 Patton tank. ... Traction is applied mechanical force used to achieve motion. ... A retread, also known as recap, is a manufacturing process designed to extend the useful lifespan of a worn tire. ...

Tires

Street tires

The gaps between the rubber sections are designed to allow water to be expelled from beneath the tire and prevent hydroplaning. The proportion of rubber to air space on the road surface directly affects its traction. Tires intended for dry weather use will be designed with minimal gaps to increase the contact patch. Generally there is a tradeoff of tread friction capability; deeper tread designs often enhance safety, but simpler designs are less costly to produce and actually may afford some roadway noise mitigation. Tires without any tread patterns are known as slicks and are generally used for racing only. Hydroplaning (sometimes aquaplaning) in a road vehicle is an effect similar to planing in a boat. ... Contact patch is the name applied to the area of a vehicles tire that is in contact with the road surface. ... Roadway noise is the most prevalent form of environmental noise Roadway noise is the collective sound energy emanating from motor vehicles. ... Roadway noise is the most pervasive form of environmental noise Noise mitigation is a set of strategies to reduce unwanted environmental sound. ... A wheel with a slick tire. ...

Street tires will also include wear limit indicators in the form of small raised bridges between the treads. When the treads are worn down enough to result in the limit indicators making contact with the road then the tire is deemed to be at the end of its service life. Brake pads use similar indicators in the form of notches on their surface that disappear when they are used. A brake is a device for slowing or stopping the motion of a machine or vehicle, and to keep it from starting to move again. ...

Off-road tires

Studded mountain bike tires for use in icy conditions

Off-road tires used in mud or dirt feature individual knob patterns to allow the tire to bite into the road and leverage the sides of the tread to get a better grip. Given the smaller contact patch, these tires tend to wear quickly when used on asphalt. Image File history File links Download high-resolution version (1312x1268, 305 KB) Studded mountain bike tires. ... Image File history File links Download high-resolution version (1312x1268, 305 KB) Studded mountain bike tires. ... A Mud Terrain Tyre is a type of automotive tyre which may be fitted as an aftermarket option to four wheel drive vehicles. ...

Mountain bike & motorcycle tires

Mountain bike and some motorcycle tires feature tread patterns similar to off-road tires used on cars and trucks but may sometimes include an unbroken tread that runs along its center. This feature provides better traction and lower noise on asphalt while the bike is vertical while retaining its ability to provide lateral grip when the bike is leaning. A cross country mountain bike race A hardtail mountain bike A mountain bike, mountain bicycle (a. ... A motorcycle is a two-wheeled vehicle powered by an engine. ...

Caterpillar tracks

The tread of a construction machine's tracks.

Caterpillar tracks such as those used on military tanks or construction machines have metal track segments which may be rubber-coated. They usually do not feature tread patterns, because these would offer little additional grip given the weight of the tracked vehicle. Image File history File linksMetadata Download high-resolution version (3008x2000, 6704 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Caterpillar track Tread Metadata This file contains additional information, probably added from the digital camera or scanner used... Image File history File linksMetadata Download high-resolution version (3008x2000, 6704 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Caterpillar track Tread Metadata This file contains additional information, probably added from the digital camera or scanner used... U.S. M60 Patton tank. ...