High-Performance Tire Designs for Off-Road Mud Terrains

Agricultural tire with improved traction on soft ground like mud and sand without sacrificing performance on hard surfaces. The tire has blocks extending from the tread onto the shoulder areas, but not on the tread itself. The blocks have cavities that compact soft material like sand or mud when the tire sinks. This creates ground resistance force for traction. The blocks don't contact hard surfaces since they're not on the tread. This allows controlled wear and maintains traction benefit over time.

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Tire design to reduce exterior noise without sacrificing mud performance. The tire has a tread with a unique land ratio distribution. The land ratio between the tread edge and an inner position 23% of the tire height is called the buttress ratio. The shoulder land ratio is larger than the crown ratio and the buttress ratio. This configuration allows lower noise while maintaining good mud traction. The tire also has specific groove widths and variations in the buttress lateral groove configuration.

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A pneumatic tire design with improved traction and appearance on rough terrain while maintaining tire uniformity and NVH performance. The tire has a tread with an inward extending buttress near the edge. The buttress has multiple protectors protruding outward. Each protector has an outward facing portion, an inward facing portion, and a circumferential portion around the tire. The angles of these portions relative to the top surface normal are different. This provides improved traction on muddy terrain due to the circumferential portion's shear force. It also improves appearance by creating an apparent height difference between the outward and inward facing portions.

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Tire with improved mud performance and rolling resistance. The tire has a tread design with a shoulder land region between the shoulder groove and edge. The shoulder land has inner and outer areas. The outer area has higher ground contact pressure than the inner area under standard loading conditions. This is achieved by connecting shoulder axial grooves to the edge and extending them in the outer area. The inner area has lower ground contact pressure. This balances mud shedding from the outer area with rolling resistance from the inner area.

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Knit body for tires with improved traction performance. The knit is made from metal fibers with convex polygonal cross sections. This unique fiber shape provides better grip on various surfaces compared to conventional round fiber shapes. The knitted tire tread using these fibers has enhanced traction on rough terrain like sand, mud, and snow. It prevents burial of the tires and prevents foreign objects from entering through the tread gaps.

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A pneumatic tire design that improves on-snow, mud, and durability performance by having a tread with a first edge and an inward extending first buttress. The buttress provides additional rigidity and support to prevent tread deformation and improve traction in snow and mud. It also helps prevent tread edge wear and separation. The sidewall extends inward from the buttress.

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Pneumatic tire with improved off-road performance. The tire has center blocks with stepped grooves that extend diagonally across the blocks. The steps create see-through sections and wider sections. This balance of openings and expansions allows the blocks to bite into soft terrain while also shedding mud. The steps are angled within certain limits for optimal performance. The tire also has center blocks extending beyond the equator to provide more edge effect. The steps in the diagonally inclined grooves provide a well-balanced combination of shear force and mud shedding. The tire's design strikes a balance between edge components in the circumferential and lateral directions for improved off-road traction.

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A pneumatic tire design with improved off-road performance by balancing traction and mud shedding. The tire has main grooves on the left and right sides that extend continuously around the circumference. There is no main groove between them in the axial direction. This configuration allows the tire to generate good traction on rough terrain while also improving mud shedding compared to having a full circumference groove between the main grooves.

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Pneumatic tire with sidewall design that prevents mud buildup and staining on the sidewall pattern. The sidewall has a raised portion with a different color than the rest of the sidewall. The tread has shoulder blocks with inner edges located inside a line parallel to the tire axis passing through the midpoint of the raised portion height. This prevents mud from the shoulder grooves reaching the raised portion top surface and staining it. The raised portion angle and protrusion height are optimized to divert mud flow.

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A pneumatic tire with a conspicuous sidewall mark that is less likely to clog with mud compared to traditional marks. The mark has an outer surface with 1-4 elongated protrusions that have a trapezoidal cross section orthogonal to the tire's traveling direction. This configuration reflects light in a complex manner to make the mark more noticeable. The trapezoidal shape prevents mud buildup compared to short pitch serrations.

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A pneumatic tire with a mark on the sidewall that has a wavy, curved or uneven face with multiple peaks. This mark design prevents mud clogging and improves legibility compared to conventional marks with serrated edges. The wavy peaks provide a conspicuous, non-clogging mark that is less likely to fill with mud while driving on muddy roads.

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Vehicle tire with adjustable buoyancy for improved mud driving performance. The tire has depressions on the outer sidewall that can be inflated to create concave arcuate shapes. When driving on mud, the depressions are inflated to provide buoyancy and traction. On normal roads, the depressions are deflated to be flat for better traction. This allows the tire to adapt its profile for optimal performance in both muddy and dry conditions.

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A pneumatic tire design with improved mud traction and cut resistance while reducing weight compared to traditional tire sidewall protectors. The tire has a tread with an inward extending buttress. Along the buttress, adjacent protectors are connected by a tie-bar that is partially formed. The tie-bar protrudes less than the neighboring protectors. This allows the sidewall to flex more in mud without getting stuck while still protecting against cuts. By reducing the tie-bar height compared to the protectors, it allows better flexing and mud release compared to fully connected sidewall protectors.

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Utility vehicle tire with improved grip and reduced cracking on unsurfaced and snowy roads. The tire has channels in the tread with V-shaped depressions at the edges. The depressions provide additional gripping edges when driving on loose surfaces like gravel, sand, mud, or snow. They also reduce cracking at the channel bases and shoulder flanks by spreading the forces and preventing stress concentrations. The depressions are spaced to have at least one in each tread pitch.

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Pneumatic tire with improved traction and cut resistance for off-road applications. The tire has a block pattern on the shoulder and side regions. The blocks have contour lines extending along the grooves that are aligned on the same line. This prevents misalignment and improves traction by efficiently discharging mud. The blocks also have tapered shapes with straight and inclined portions at the top. This avoids stress concentration and improves cut resistance. The blocks also have protrusions on the groove bottoms that extend in line. This improves stone catching and soil discharge.

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Pneumatic tire with enhanced traction and wear resistance on unpaved roads. The tire has blocks with notches in adjacent blocks facing each other across a longitudinal groove. The notches have larger width and depth on the inner side of the groove than the outer side. This allows the notches to effectively compress and displace mud between the blocks compared to just having notches on one side. This improves traction in soft terrain without degrading wear as much.

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Tire tread design for heavy-duty vehicles like construction dump trucks that improves grip on muddy terrain while reducing stone retention and wear. The tread has five rows of blocks arranged with symmetrical intermediate and lateral rows flanking a central row. The lateral rows have transverse grooves extending from the edge to the inner longitudinal cut, while the intermediate rows have a mix of transverse grooves and sipes. This allows better mud penetration and evacuation in the outer rows while preventing stone retention. The central row has sipes between inner longitudinal cuts instead of grooves. This reduces stone retention compared to grooves while maintaining inner block interconnection.

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Heavy duty tire tread design for improved grip and reduced crown temperatures in harsh off-road applications like construction vehicles. The tread has five rows of blocks separated by alternating longitudinal grooves and transverse cuts. The inner longitudinal grooves connect adjacent rows to allow longitudinal mud/water discharge. This promotes grip and reduces mud buildup. The tread also has ventilation cavities between blocks in lateral rows that open into the sidewall. This allows sidewall cooling to prevent crown damage. The design balances grip, mud discharge, and cooling to improve tire performance and durability in challenging off-road conditions.

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Pneumatic tire with improved off-road performance and damage resistance. The tire has center blocks with cuts that have angled walls extending in different directions. The cuts have larger angles than the walls of the surrounding block. This provides biting edges for off-road traction while maintaining block rigidity and preventing excessive damage. The tire also has opposing center blocks extending across the equator and inclined shoulder grooves with opposite inclinations. This allows mud and stones to flow into the cuts for better off-road grip. The blocks have shallow sipe ends for traction without rigidity loss.

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Motor vehicle tire with improved on-road and off-road performance for vehicles like pickup trucks and SUVs. The tire has a tread design with intermeshing blocks in the central portion that increase in contact as you move towards the equatorial plane. This provides better tread band compactness and grip on surfaces like snow and sand compared to widely spaced blocks. The tire also has larger circumferential grooves for better mud removal and draining. This balance of on-road and off-road features reduces noise, wear, and tear compared to traditional off-road tires.

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