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Tread Pattern Types and Functions Rib shape : Tread patterns dominated by multiple circumferential grooves. * Advantages include lower rolling resistance plus good directional stability and steering control thanks to lateral resistance. Rib type patterns are suitable for sustained high speeds thanks to their low levels of heat generation. * Key disadvantages are poor braking & acceleration grip on wet roads. * Application: For paved road surfaces and truck or bus steer axles Lug shape : Tread patterns with the groove arrangement perpendicular to the circumference of the tyre * The main advantage of lug patterns is excellent braking power and traction. * The biggest disadvantage is a tendency towards high noise when driven at high speed. Indeed, lug patterns are not suitable for high speed driving due to their high rolling resistance. * Application: For dirt roads, rear wheels of buses, industrial vehicles and dump trucks . Rib-Lug shape...

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