Background
Tires are annular elastomeric rubber articles assembled on various vehicles or machines for ground contact rolling. The automobile body is supported by the automobile body through the metal rim, external impact is buffered, contact with a road surface is achieved, and running performance of the automobile is guaranteed. Tires are often used under complex and severe conditions, and they are subjected to various deformations, loads, forces and high and low temperatures during running, and therefore must have high load-bearing, traction and cushioning properties. At the same time, it is also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat buildup. Half of the world's consumed rubber is used in tire production, and the ability of a tire to consume rubber is seen.
The design of the tire pattern is various, and is considered according to the application of different purposes and different road conditions, and the tire pattern is also considered from the aspects when being selected. The tire patterns play a very important role in the whole driving, and the patterns with reasonable design not only can effectively save oil, but also can reduce noise generated in the driving process of the automobile, and can enhance the driving force, braking force and traction performance of the automobile on various severe and wet road surfaces, thereby improving the driving safety of the automobile.
There are generally several categories of tire tread patterns:
(1) The straight groove pattern is also called a common pattern, and the pattern is designed by taking a longitudinal groove as a main pattern.
The characteristics are excellent operation stability, small rotation resistance, low noise, especially excellent drainage performance, and difficult transverse sliding.
The device is suitable for vehicles, such as cars, trucks and even airplanes, which are used for walking on flat roads.
The disadvantage is poor driving and traction.
(2) The pattern of the transverse grooves is designed by using the transverse grooves as main patterns.
Is characterized in that the driving force, braking force and traction force of the transverse groove pattern are excellent, and the wear resistance is excellent.
The vehicle type vehicle is suitable for being used on severe roads such as gravel roads, and is mainly used in industrial, medium and short distance vehicles such as bulldozers, excavators, loaders and the like and heavy goods vehicles.
The disadvantage is that the noise is big.
(3) The longitudinal and transverse groove pattern is also called as a comprehensive pattern, and integrates the pattern design of straight groove type and transverse groove type.
Is characterized by having the advantages of the patterns of the longitudinal grooves and the transverse grooves.
Is suitable for severe road surface.
The defect is that abnormal abrasion is easy to occur.
(4) The block patterns are regularly arranged in blocks.
Is characterized in that the driving force and the braking force are good, and the force for driving the vehicle to advance is provided.
Is applicable to snow, mud and other road surfaces.
The abrasion resistance is poor, and the mileage life is short.
The main tubeless tire driving route in the market is the road surface above the pavement, the main quality symptoms of the tire are shoulder air, crown air and wear resistance, the tire has high requirement on patterns, good wear resistance and novel appearance.
For example, CN111703258A discloses a tread structure and a tire, wherein the tread structure comprises an outer shoulder rib, a central rib and an inner shoulder rib which are sequentially arranged from the outside to the inside and separated by a longitudinal main groove, the outer shoulder rib is provided with a plurality of first transverse grooves which are axially arranged circumferentially and have unequal pitches, the inner shoulder rib is provided with a plurality of second transverse grooves which are axially arranged circumferentially and have unequal pitches, the first transverse grooves penetrate through the longitudinal main groove, the second transverse grooves penetrate through the inner shoulder rib axially, the pitch of the first transverse grooves is larger than that of the second transverse grooves, the groove width of the first transverse grooves is smaller than that of the second transverse grooves, the central rib is provided with a plurality of first cutter grooves which are not equally spaced, and the first cutter grooves are axially obliquely arranged, and at least one end of each first cutter groove penetrates through the adjacent longitudinal main groove. However, this application is only poor in design guidance of the groove pattern, poor in drainage property, and poor in grip.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide an all-steel load tubeless radial tire tread pattern structure and a tire, and the collocation design of the longitudinal pattern and the transverse pattern in the utility model realizes that the tire has good guiding performance, drainage performance, grip performance, puncture resistance and sideslip resistance under high-speed running. And, the constantly changing groove angle increases the traction and lateral forces of the tire.
The aim of the utility model can be achieved by the following technical scheme:
The utility model provides a tread pattern structure of an all-steel load tubeless radial tire, which comprises the following steps:
The first longitudinal grooves are arranged in the center of the crown and distributed along the circumferential direction of the tire tread, and the bottom surfaces of the first longitudinal grooves in arc transition extend outwards in the radial direction to the tread surface to form grooves with gradually increased widths;
Second longitudinal grooves which are uniformly arranged on two sides of the first longitudinal groove and distributed along the circumferential direction of the tire tread, wherein the bottom surfaces of the second longitudinal grooves which are in arc transition extend outwards in the radial direction to the tread surface to form grooves with gradually increased widths;
and lug portions extending from the first longitudinal groove outer wall to the second longitudinal groove outer wall and distributed along the tire tread circumferential direction for improving driving performance.
Further, the lug portion includes:
The first steel sheets are distributed in a zigzag manner, only one bending part of the first steel sheets is arranged at the center of the first steel sheets, and the second steel sheets are distributed in a zigzag manner, and a plurality of bending parts of the second steel sheets are arranged at the center of the second steel sheets;
And a plurality of third steel sheets and a plurality of fourth steel sheets which extend from the second longitudinal grooves to the first longitudinal grooves and are alternately distributed along the circumferential direction of the tire tread, wherein the third steel sheets are distributed in a zigzag manner, only one bending part of the third steel sheets is arranged at the center, the fourth steel sheets are distributed in a zigzag manner, a plurality of bending parts of the fourth steel sheets are arranged at the bending parts of the fourth steel sheets, the bending trends of the first steel sheets and the third steel sheets are opposite, and the bending trends of the second steel sheets and the fourth steel sheets are opposite.
Further, the transverse pattern part further comprises connecting sheets arranged at the centers of the first steel sheet and the second steel sheet and at the centers of the third steel sheet and the fourth steel sheet.
Further, first pattern blocks and first diagonal blocks are alternately formed between the first steel sheets and the second steel sheets, second pattern blocks or second diagonal blocks are alternately formed between the third steel sheets and the fourth steel sheets, the width of the first pattern blocks is larger than that of the first diagonal blocks, and the width of the second pattern blocks is larger than that of the second diagonal blocks;
The first diagonal block is internally provided with a plurality of first inclined sections extending from the first steel sheet to the second steel sheet, and grooves are formed between two adjacent first inclined sections;
The second diagonal block is internally provided with a plurality of second inclined sections extending from the third steel sheet to the fourth steel sheet, and grooves are formed between two adjacent second inclined sections.
Further, the first longitudinal groove is provided with a plurality of first protruding blocks.
Further, the second longitudinal groove is provided with a plurality of second protruding blocks.
Further, the second longitudinal groove has a width at least greater than the width of the first longitudinal groove.
Further, a plurality of exhaust holes are distributed on the first longitudinal groove, the second longitudinal groove and the transverse pattern part.
Further, the two walls of the first longitudinal groove are in a zigzag line shape along the circumferential direction of the tire tread, the lengths of two adjacent straight lines are equal, and the two walls of the second longitudinal groove are in a zigzag line shape along the circumferential direction of the tire tread, the lengths of the two adjacent straight lines are different, and the lengths of the two straight lines are equal in interval arrangement.
The present utility model also provides a tire comprising:
Tyre carcass, and
An all-steel load tubeless radial tire tread pattern structure arranged on the tire carcass tread and described above.
Compared with the prior art, the utility model has the following beneficial effects:
1. The tire with the pattern structure adopts the mixed pattern and the change design of the straight grooves and the folded grooves, the rigidity rationalization design of the tire shoulder part, the excellent eccentric wear resistance, the deep pattern design, the long wear life and the excellent durability of the tire body.
The exhaust holes are convenient for exhaust during vulcanization, prevent air pockets from causing pattern fillets and side wall lacked, promote sizing material flow, enable sizing material vulcanization to be more uniform, and the transverse pattern portions improve the earlier-stage ground grabbing force, the pattern groove angles of the first longitudinal pattern grooves and the second longitudinal pattern grooves are continuously changed, and the traction force and the lateral force of the tire are improved.
2. According to the utility model, the bending trends of the first steel sheet and the third steel sheet are opposite, the bending trends of the second steel sheet and the fourth steel sheet are opposite, and the bending trends of the two sides are opposite, so that asymmetric patterns are formed, the tread is crossed rigidly, the left and right functions are similar to a self-locking function, the grip of the tire is improved, the straight running stability of the vehicle on various roads is improved, the drainage and snow removal performances are excellent, the running stability on severe ground such as accumulated snow ground is enhanced, and the running function of a normal road is considered.
3. According to the utility model, the connecting sheet separates the first steel sheet from the second steel sheet and separates the third steel sheet from the fourth steel sheet, so that a plurality of pattern block areas are formed, the pattern block areas have large trend spans, different pattern blocks have different trend trends, the longitudinal control and lateral skid resistance are beneficial, and the linear running stability of the vehicle is improved.
4. According to the utility model, the design of the two diagonal blocks improves the drainage and snow removal capacity in the first aspect, the drainage and snow removal capacity in the second aspect, and the friction between the tread and the ground is increased and the traction and lateral force of the tire are enhanced due to the fact that trend trends of the inclined sections on the two sides and the steel sheet are different in the third aspect.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
Features such as a part model, a material name, a connection structure, a control method and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, bolted, welded, directly connected, indirectly connected via an intermediate medium, or in communication with the interior of two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The tubeless tire has higher requirements on road surface running, and the main quality symptoms of common tires are shoulder void, crown void and non-wear resistance, so the tire has higher requirements on patterns, has good wear resistance and novel appearance, but the straight groove patterns, the transverse groove patterns, the longitudinal and transverse groove patterns and the block patterns cannot have good guiding performance, drainage performance, grip performance, puncture resistance and sideslip resistance, and the traction force or lateral force of the tire is not high, therefore, the utility model provides an all-steel load tubeless radial tire tread pattern structure, the structure of which is shown in fig. 1 and 2, comprising:
the first longitudinal grooves 1 are arranged in the center of the crown and distributed along the circumferential direction of the tire tread, and the bottom surface of each first longitudinal groove 1 in the shape of an arc transition extends outwards in the radial direction to the surface of the tread to form grooves with gradually increased widths;
Second longitudinal grooves 2 which are uniformly arranged on two sides of the first longitudinal groove 1 and distributed along the circumferential direction of the tire tread, wherein the bottom surfaces of the second longitudinal grooves 2 which are in arc transition extend outwards along the radial direction to the tread surface to form grooves with gradually increased widths;
And the transverse pattern parts 3 which extend from the outer wall of the first longitudinal pattern groove 1 to the outer wall of the second longitudinal pattern groove 2 and are used for improving driving performance are distributed along the circumferential direction of the tread of the tire, and the design of the three longitudinal pattern grooves ensures that the tire has long wear life and excellent durability of the tire body, and is designed in a deep pattern, and meanwhile, the wear resistance of the tire body is improved.
In some specific embodiments, referring again to fig. 1, the lug portion 3 includes:
The first steel sheets 301 and the second steel sheets 302 are distributed alternately along the circumferential direction of the tire tread, the first steel sheets 301 are distributed in a zigzag manner, only one bending part of each first steel sheet 301 is arranged at the center, and the second steel sheets 302 are distributed in a zigzag manner, and a plurality of bending parts of each second steel sheet 302 are arranged at the center;
And a plurality of third steel sheets 303 and a plurality of fourth steel sheets 304 which extend from the second longitudinal groove 2 to the first longitudinal groove 1 and are alternately distributed along the circumferential direction of the tread of the tire, wherein the third steel sheets 303 are distributed in a zigzag manner, only one bending part of each third steel sheet 303 is arranged at the center, the fourth steel sheets 304 are distributed in a zigzag manner, a plurality of bending parts of each fourth steel sheet 304 are arranged at the bending parts of each fourth steel sheet, the bending trends of the first steel sheets 301 and the third steel sheets 303 are opposite, the bending trends of the second steel sheets 302 and the fourth steel sheets 304 are opposite, the bending trends of the two sides are opposite, an asymmetric pattern is formed, the tread rigidity is crossed, the left and right are similar to a self-locking function, the straight running stability of the vehicle on various roads is improved, the drainage and snow discharging performance is excellent, the running stability on the bad ground such as the accumulated snow ground is enhanced, and the running function of a normal road surface is enhanced.
In a more specific embodiment, referring to fig. 1 again, the lug portion 3 further includes a connecting piece 305 disposed at the center of the first steel sheet 301 and the second steel sheet 302, and at the center of the third steel sheet 307 and the fourth steel sheet 308, where the connecting piece 305 separates the first steel sheet 301 from the second steel sheet 302, separates the third steel sheet 307 from the fourth steel sheet 308, and forms a plurality of pattern block areas, where the pattern block areas have large trend spans, different pattern block trends have different trends, and benefit longitudinal control and lateral anti-skid, and improve the straight running stability of the vehicle.
In a more specific embodiment, referring to fig. 1 again, first pattern blocks 306 and first diagonal blocks 307 are alternately formed between the first steel sheet 301 and the second steel sheet 302, second pattern blocks 308 or second diagonal blocks 309 are alternately formed between the third steel sheet 303 and the fourth steel sheet 304, the width of the first pattern blocks 306 is larger than that of the first diagonal blocks 307, and the width of the second pattern blocks 308 is larger than that of the second diagonal blocks 309;
The first diagonal block 307 has a plurality of first inclined sections extending from the first steel sheet 301 to the second steel sheet 302, and a groove is formed between two adjacent first inclined sections;
The second diagonal blocks 309 are provided with a plurality of second inclined sections extending from the third steel sheet 303 to the fourth steel sheet 304, grooves are formed between two adjacent second inclined sections, the first aspect of the design of the two diagonal blocks improves the drainage and snow removal capacity, the second aspect improves the stone removal capacity, and the third aspect increases the friction between the tread and the ground due to different trend between the inclined sections on two sides and the steel sheets, and enhances the traction and lateral force of the tire.
In some specific embodiments, referring to fig. 1 again, a plurality of first protrusions 101 are distributed in the middle of the first longitudinal grooves 1, and the first protrusions 101 are designed to improve the drainage performance of the tire.
In some specific embodiments, referring to fig. 1 again, a plurality of second protrusions 201 are distributed in the middle of the second longitudinal grooves 2, and the second protrusions 201 are designed to improve the drainage performance of the tire.
In some specific embodiments, referring to fig. 1, the width of the second longitudinal groove 2 is at least greater than the width of the first longitudinal groove 1, and the width of the groove is set to enable the tire to reasonably distribute the ground contact stress, so as to improve the rigidity and the ground contact area of the tread.
In some specific embodiments, referring to fig. 1 again, a plurality of exhaust holes 4 are distributed on the first longitudinal grooves 1, the second longitudinal grooves 2 and the transverse grooves 3, so as to facilitate exhaust during vulcanization, prevent air from causing pattern fillets and side wall shortage, promote the flow of rubber, and make the vulcanization of the rubber more uniform.
In some specific embodiments, referring to fig. 1 again, two walls of the first longitudinal groove 1 are in a zigzag line shape along the tire tread circumference and the lengths of two adjacent straight lines are equal, two walls of the second longitudinal groove 2 are in a zigzag line shape along the tire tread circumference and the lengths of two adjacent straight lines are different, two straight lines are equal in length and are arranged at intervals, and the zigzag grooves enable the angles of the grooves to be changed continuously, so that the traction force and the lateral force of the tire are improved.
A second aspect of the present utility model provides a tire comprising:
Tyre carcass, and
An all-steel load tubeless radial tire tread pattern structure arranged on the tire carcass tread and described above.
The above embodiments may be implemented singly or in any combination of two or more.
The above embodiments are described in more detail below in connection with specific examples.
Example 1
The tubeless tire has higher requirements on road surface running, and common main quality symptoms of the tire are shoulder void, crown void and non-wear resistance, so the tire has higher requirements on patterns, has good wear resistance and novel appearance, but the straight groove patterns, the transverse groove patterns, the longitudinal and transverse groove patterns and the block patterns cannot have good guiding performance, drainage performance, grip performance, puncture resistance and sideslip resistance, and the traction force or lateral force of the tire is also not high, therefore, the embodiment provides an all-steel load tubeless radial tire tread pattern structure, which is shown in fig. 1 and 2, and comprises a first longitudinal groove 1, a second longitudinal groove 2 and a transverse pattern part 3, wherein the first longitudinal groove 1 is arranged in the center of the crown and distributed along the circumferential direction of the tire tread, and the bottom surface of the first longitudinal groove 1 in the shape of an arc transition extends outwards to the tread surface along the radial direction to form a groove with gradually increased width; the second longitudinal grooves 2 are uniformly arranged on two sides of the first longitudinal groove 1 and distributed along the circumferential direction of the tire tread, the bottom surface of the second longitudinal groove 2 in arc transition extends outwards along the radial direction to form a groove with gradually increased width on the tread surface, the transverse pattern part 3 is arranged between the first longitudinal groove 1 and the second longitudinal groove 2, a plurality of first convex blocks 101 are distributed in the middle of the first longitudinal groove 1, the design of the first convex blocks 101 improves the stone discharging and water discharging performance of the tire, a plurality of second convex blocks 201 are distributed in the middle of the second longitudinal groove 2, and the design of the second convex blocks 201 improves the stone discharging and water discharging performance of the tire. The width of the second longitudinal groove 2 is at least larger than that of the first longitudinal groove 1, and the arrangement of the groove width enables the grounding stress to be reasonably distributed on the tire, so that the rigidity and the grounding area of the tread are improved. A plurality of exhaust holes 4 are distributed on the first longitudinal pattern groove 1, the second longitudinal pattern groove 2 and the transverse pattern part 3, so that exhaust is facilitated during vulcanization, pattern fillets and side wall lacked caused by air pockets are prevented, the flow of rubber materials is promoted, and the vulcanization of the rubber materials is more uniform. The two walls of the first longitudinal groove 1 are in a zigzag linear shape along the circumferential direction of the tire tread, the lengths of two adjacent straight lines are equal, the two walls of the second longitudinal groove 2 are in a zigzag linear shape along the circumferential direction of the tire tread, the lengths of the two adjacent straight lines are different, the two straight lines are equal in length at intervals, and the zigzag grooves enable the angles of the grooves to be changed continuously, and the traction force and the lateral force of the tire are improved.
Specifically, the lug 3 includes a plurality of first steel sheets 301 and a plurality of second steel sheets 302 which extend from the second longitudinal groove 2 to the first longitudinal groove 1 and are alternately distributed along the tire tread circumference, the first steel sheets 301 are distributed in a zigzag manner, the bending positions of the first steel sheets 301 are only one and are arranged at the center, the second steel sheets 302 are distributed in a zigzag manner, the bending positions of the second steel sheets 302 are provided with a plurality of positions, a plurality of third steel sheets 303 and a plurality of fourth steel sheets 304 which extend from the second longitudinal groove 2 to the first longitudinal groove 1 and are alternately distributed along the tire tread circumference, the third steel sheets 303 are distributed in a zigzag manner, the bending positions of the third steel sheets 303 are only one and are arranged at the center, the fourth steel sheets 304 are distributed in a zigzag manner, the bending directions of the first steel sheets 301 and the third steel sheets 303 are opposite, the bending directions of the second steel sheets 302 are opposite to the fourth steel sheets 304, an asymmetric pattern is formed, the tread rigidity is crossed, the left and right steel sheets are in a self-locking function, the straight running stability of various accumulated water of the vehicle is improved, the water drainage and the snow running stability is excellent, and the snow running stability is good, and the running stability is good.
Specifically, the transverse pattern portion 3 further includes a connecting piece 305 disposed at the center of the first steel sheet 301 and the second steel sheet 302, and at the center of the third steel sheet 307 and the fourth steel sheet 308, the connecting piece 305 separates the first steel sheet 301 from the second steel sheet 302, separates the third steel sheet 307 from the fourth steel sheet 308, and forms a plurality of pattern block areas, the pattern block areas have large trend spans, different pattern block trends have different trends, benefit longitudinal control and lateral anti-slip, and improve the straight running stability of the vehicle.
Specifically, first pattern block 306 and first diagonal block 307 are alternately formed between first steel sheet 301 and second steel sheet 302, second pattern block 308 or second diagonal block 309 are alternately formed between third steel sheet 303 and fourth steel sheet 304, the width of first pattern block 306 is larger than that of first diagonal block 307, the width of second pattern block 308 is larger than that of second diagonal block 309, a plurality of first inclined sections extending from first steel sheet 301 to second steel sheet 302 are arranged in first diagonal block 307, grooves are formed between two adjacent first inclined sections, a plurality of second inclined sections extending from third steel sheet 303 to fourth steel sheet 304 are arranged in second diagonal block 309, grooves are formed between two adjacent second inclined sections, the design of two diagonal blocks improves the drainage and snow removal capacity on the first aspect, the stone removal capacity on the second aspect, and the traction force and lateral force of the tire are enhanced due to the fact that the inclined sections on two sides are different from the trend of the steel sheets, the friction between the tread and the ground is increased
Referring again to FIG. 2, FIG. 2 is a single pitch pattern with a tread pattern pitch of 52 knots and a running surface width of 234mm in this embodiment.
The first longitudinal groove 1 has a groove width of 13.6mm, a groove depth of 20.5mm, a groove bottom with a semicircular arc transition radius of 0.6mm, the first diagonal decoration 302 and the second diagonal decoration 304 have a diagonal height of 0.5mm, a spacing of 1.08mm, and the first convex and second convex blocks 201 have a height of 3.5mm and a width of 3mm.
The working principle of this embodiment is as follows:
The tire with the pattern structure in the embodiment adopts a straight groove and folded groove mixed pattern and a change design, the rigidity of the tire shoulder part is rationalized, the eccentric wear resistance is excellent, the deep pattern design has long wear life, and the durability of the tire body is excellent. The exhaust holes 4 facilitate exhaust during vulcanization, prevent air pockets from causing pattern fillets and side wall lacked, promote sizing material flow, enable sizing material vulcanization to be more uniform, enable the transverse pattern parts 3 to promote the earlier-stage ground grabbing force, enable the pattern groove angles of the first longitudinal pattern grooves 1 and the second longitudinal pattern grooves 2 to be continuously changed, and improve the traction force and the lateral force of the tire. The first steel sheet 301 and the third steel sheet 303 have opposite bending trends, the second steel sheet 302 and the fourth steel sheet 304 have opposite bending trends at two sides, and asymmetric patterns are formed, so that the treads are crossed rigidly, the left and right functions of self-locking are achieved, the straight running stability of the vehicle on various road surfaces is improved, the water and snow draining performances are excellent, the running stability on severe ground such as accumulated snow ground is enhanced, and the running function of a normal road surface is considered. The connecting sheet 305 separates the first steel sheet 301 from the second steel sheet 302 and separates the third steel sheet 307 from the fourth steel sheet 308, so that a plurality of pattern block areas are formed, the pattern block areas have large trend spans, different pattern block trends have different trends, the longitudinal control and the lateral skid resistance are beneficial, and the straight running stability of the vehicle is improved. The design of the two twill blocks improves the drainage and snow removal capacity on the first aspect, the second aspect improves the stone removal capacity, and the third aspect increases the friction between the tread and the ground and strengthens the traction and the lateral force of the tire because the trend of the inclined sections on the two sides is different from that of the steel sheets.
Example 2
The present embodiment provides a tire including:
Tyre carcass, and
An all steel load-bearing tubeless radial tire tread pattern structure provided on the tire carcass tread and as in example 1.
Comparative example 1
Most of the same as in example 1, except that the second steel sheet 302 and the fourth steel sheet 304 have the same bending tendency.
The rolling resistance and grip of example 1 and comparative example 1 were respectively tested using ECE R117, and the test results are shown below:
Performance of |
Example 1 |
Comparative example 1 |
Ground rolling resistance N/KN |
5.939 |
6.124 |
Wet grip performance index G |
1.13 |
1.06 |
As is clear from the above table, the tire using the tread pattern structure provided in example 1 had a reduced rolling resistance and an increased wet grip performance index after the asymmetric design.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.