FORM 2
THE PATENTS ACT, 1970 (39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See section 10, rule 13) 1. Title of the invention: VEHICLE TIRE
2. Applicant(s)

NAME NATIONALITY ADDRESS
CEAT LIMITED Indian RPG HOUSE, 463, Dr. Annie Besant Road, Worli, Mumbai -Maharashtra 400 030, India
3. Preamble to the description
COMPLETE SPECIFICATION
The following specification particularly describes the invention and the manner in which it
is to be performed.

TECHNICAL FIELD
[0001] The present subject matter relates, in general, to vehicle tires and,
particularly but not exclusively, to vehicle tires having treads.
BACKGROUND
[0002] Tires support load of a vehicle and impact handling, drivability, and safety
of the vehicle. The tire has a crown region and a shoulder region that are located on either side of the crown region. In an example, the crown region may be understood as outer region of the tire formed along complete circumference of the tire and spread along width of the tire. Further, the crown region contacts with surface during rotation. In an example, beads may be understood as edges of the tire. The beads contact with wheel during mounting of the tire. The shoulder region is a portion of the tire joining the crown region and the beads of the tire.
[0003] Vulcanized and treated rubber on the crown region of the tire is a tread of
the tire. The tread is often carved in diverse configuration by way of tread blocks, tread grooves, tread voids, wear bar, and the like. The configuration the tread affects contact and interaction of the tire with road and thus affects traction of the vehicle. Hence, the tread configuration has a crucial role in tire life, vehicle maneuvering, noise-free driving, safety, and ease of driving.
BRIEF DESCRIPTION OF DRAWINGS
[0004] The detailed description is described with reference to the accompanying
figures. In the figures, the left-most digit(s) of a reference number identifies the figure
in which the reference number first appears. The same numbers are used throughout
the drawings to reference like features and components.
[0005] Fig. 1 illustrates schematic of a tread pattern for a tire, in accordance with
an implementation of the present subject matter.
[0006] Fig. 2 illustrates schematic of a tread pattern for a tire depicting an
intermediary rib in the tread pattern, in accordance with an implementation of the
present subject matter.

[0007] Fig. 3 illustrates schematic of a tread pattern for a tire depicting a
circumferential spike in the tread pattern, in accordance with an implementation of the
present subject matter.
[0008] Fig. 4 illustrates schematic of a tread pattern for a tire depicting a contact
patch of the tire with the tread pattern, in accordance with an implementation of the
present subject matter.
[0009] Fig. 5 illustrates a perspective view of a tire with tread pattern, in
accordance with an implementation of the present subject matter.
DETAILED DESCRIPTION
[0010] The present subject matter relates to aspects relating to tire tread and
configuration for the tire tread.
[0011] During motion of a vehicle, tread region of the tire contacts with surface of
the road. Upon contact with the surface, ambient air gets trapped between grooves of the tire and the surface. The trapping of the air and improper air channeling generates noise in the tire during motion. Conventionally, diverse tread patterns have been designed. However, conventional tread patterns are non-symmetrical causing non-uniform air channeling and amounting to generation of noise in the tire. Further, non-symmetrical tread patterns amount to non-uniform wear of the tire and reduction in life of the tire.
[0012] Additionally, some tread patterns are provided with multiple grooves to
enhance air channeling. However, with increase in grooves, surface of the tire in contact with the surface during motion is reduced, amounting to poor braking of the vehicle. Thus, affecting maneuvering and safety of the vehicle.
[0013] To this end, tire tread configuration for tire of a vehicle is described herein.
In an embodiment, the tread configuration overcome the above-described problems associated with air channeling, to achieve reduction in noise without compromising on life of the tire of the vehicle, braking of the vehicle, handling of the vehicle, along with safety of the rider.

[0014] In accordance with an embodiment of the present subject matter, a tire
having two shoulder regions with a tread region between the two shoulder regions is described. The tire includes a first circumferential groove, a second circumferential groove, a third circumferential groove and a fourth circumferential groove along length of the tire. The first circumferential groove, the second circumferential groove, the third circumferential groove and the fourth circumferential groove form a first circumferential tread row, a central tread row and a second circumferential tread row in the tread region of the tire. The central tread row is formed between the first circumferential tread row and the second circumferential tread row. The tire further includes a first set of tread blocks in the first circumferential tread row. Additionally, the first set of tread blocks has a plurality of tread blocks, such that each tread block is arranged in a first orientation between the first circumferential groove and the second circumferential groove. In an example, the first orientation may be aligned along clockwise orientation of the tire. Further, each tread block includes a talon shaped groove in the first orientation. The talon shaped groove is formed by a first transverse groove and second transverse groove. The first transverse groove and second transverse groove extend from a section of the first circumferential groove towards the second circumferential groove to converge at a first common vertex. Curve profile of the first transverse groove and the second transverse groove is aligned in the first orientation. The tire further includes a second set of tread block in the second circumferential tread row. Each tread block in the second set of tread blocks is arranged in a second orientation between the third circumferential groove and the fourth circumferential groove. In an example, the second orientation may be aligned along counter-clockwise orientation of the tire. Alike the first set of tread blocks, each tread block in the second set of tread blocks also includes a talon shaped groove. However, in the second set of tread blocks the talon shaped grooves are provided in the second orientation. The talon shaped grooves in tread blocks of the second set of tread blocks may be formed by a third transverse groove and a fourth transverse groove

extending from a section of the fourth circumferential groove towards the third circumferential groove to converge at a second common vertex. Curve profile of the third transverse groove and the fourth transverse groove may be aligned in the second orientation. Thus, the first set of tread block and the second set of tread block are symmetrical in pattern. Further, the first set of tread block and the second set of tread block are aligned along opposite directions around the central tread row.
[0015] Thus, the present subject matter discloses the tire tread configuration with
reduced tire noise, improved tire life and enhanced breaking performance. The tread disclosed by the present subject matter has a symmetrical tread pattern, such that the talons formed in blocks of the first circumferential tread row and the second circumferential tread row have symmetrical pattern. Further, the first set of tread block and the second set of tread block are aligned along opposite directions around the central tread row. Thus, noise generated in the tire due to air channeling of the first circumferential tread row is canceled by noise generated in the tire due to air channeling of the second circumferential tread row. Hence, the tire has reduced tire noise. Additionally, the symmetrical tread pattern amounts to uniform distribution of pressure in the tire during motion. Hence, wear in the tire is uniform amounting to increased life of the tire.
[0016] Further, due to symmetrical design and non-symmetrical orientation of the
talon shaped grooves, noise is reduced in the tire with limited number of grooves, hence the tire of the present subject matter has increased contact surface with surface, during the motion, amounting to improved braking performance of the tire. Hence, the tread pattern of the present subject matter overcomes problems associated with air channeling, life of the tire of the vehicle, braking of the vehicle, handling of the vehicle, along with safety of the rider.
[0017] These and other advantages of the present subject matter would be
described in greater detail in conjunction with the following figures. While aspects of tire tread configuration for tire of vehicle can be implemented in any number of

different configurations, the embodiments are described in the context of the following device(s) and method(s).
[0018] Fig. 1 illustrates schematics of a tire with a tread pattern 100 for utility
vehicles (UVR) and crossover utility vehicles (CUV), in accordance with an
implementation of the present subject matter. The tire may have two shoulder regions
with a tread region between the two shoulder regions. The tire has the crown region
and the shoulder region is located on either side of the crown region. In an example,
the crown region may be understood as outer region of the tire formed along complete
circumference of the tire and spread along width of the tire. Further, the crown region
contacts with surface during rotation. Additionally, the shoulder regions join the crown
region to rim of the tire. The tread region may include the tread pattern 100.
[0019] As illustrated, the tire tread pattern 100 is formed by plurality of
circumferential tread rows separated by circumferential grooves. The circumferential grooves may be understood as a recess in the tread portion of the tire along circumference of the tire. The tire tread pattern 100 may also include transverse grooves. The transverse grooves may be understood as grooves in the solid tread portion of the tire along tread width of the tire. Thus, the transverse grooves may be understood as grooves in solid tread portion branching from a section of one circumferential grooves and extending towards second circumferential groove. In an example, the transverse grooves may be through grooves, reaching from one circumferential groove to second circumferential groove. In another example, the transverse grooves may be formed at 90 degrees with respect to circumference of the tire. In yet another example, the transverse grooves may be formed at an angle less than the circumference of the tire.
[0020] In an exemplary implementation, a circumferential tread row may include
multiple tread blocks. Tread blocks in the circumferential tread row may be separated by transverse grooves. Thus, circumferential and transverse grooves in the solid tread portion form tread blocks and multiple treads together form a circumferential tread

row. Number of tread blocks in a circumferential tread row is known as pitch of the tire. In an example, pitch of the tire may vary for a tire with same tread width and tire radius.
[0021] In an implementation of the present subject matter, the tire tread may
include a first circumferential tread row 102, a central circumferential tread row 104 and a second circumferential tread row 106. In an example, the central circumferential tread row 104 may be formed between the first circumferential tread row 102 and the second circumferential tread row 106. In another example, circumferential grooves may be formed between the first circumferential tread row 102, the central circumferential tread row 104 and the second circumferential tread row 106, such that a circumferential groove may be formed between the first circumferential tread row 102 and the central circumferential tread row 104, and another circumferential groove may be formed between the central circumferential tread row 104 and the second circumferential tread row 106.
[0022] The first circumferential tread row 102 may have a first width R1. In an
example, the first width R1 may be less than tread width TW of the tire. The first circumferential tread row 102 may include a first set of tread blocks. Each tread block in the first set of tread blocks is arranged in a first orientation. In an example, the first orientation may be aligned along clockwise orientation of the tire. In another example, the first orientation may be aligned along counter-clockwise orientation of the tire. In yet another example, the first set of tread block may be formed between a first circumferential groove 108 and a second circumferential groove 110. Further, each tread block may include a talon shaped groove 112 in the clockwise orientation of the tire.
[0023] The talon shaped groove 112 in each tread block of the first set of tread
blocks may be formed by a first transverse groove 114 and a second transverse groove 116. The first transverse groove 114 and the second transverse groove 116 may be extending from a section of the first circumferential groove 108 towards the second

circumferential groove 110. Further, the first transverse groove 114 and the second transverse groove 116 may converge at a first common vertex 118, namely meet at a common point. In an example, the first transverse groove 114 and the second transverse groove 116 may be curved grooves. In another example, curve profile of the first transverse groove 114 and the second transverse groove 116 are aligned along the clockwise orientation.
[0024] In an example, the first transverse groove 114 and the second transverse
groove 116 may be formed at a predetermined distance from equator M of the tire. The equator M of the tire may be understood as an axis bisecting the tire along length of the tire. In an example, the first transverse groove 114 may have a first radius D1. The first radius D1 may vary based on first width R1 of first circumferential tread row 102. Similarly, in an example, the second transverse groove 116 may have a second radius D2. The second radius D2 may vary based on first width R1 of the first circumferential tread row 102. In an exemplary implementation, the first radius D1 may be larger than the second radius D2.
[0025] In an implementation of the present subject matter, each tread block from
amongst the multiple tread blocks is defined by a section of the second circumferential groove 110 on one side and by a first circumferential groove 108 on the other side. In an example, the section of the second circumferential groove 110 may have a length equal to tread block height BH. In an embodiment of the present subject matter, different tread blocks in a circumferential tread row may have different tread block height. In another embodiment, all tread blocks in a circumferential tread row may have same tread block height.
[0026] The second circumferential tread row 106 may have a second width R2. In
an example, the second width R2 may be less than tread width TW of the tire. In an embodiment, the first width R1 and the second width R2 may be equal in a tread pattern 100 for the tire.

[0027] The second circumferential tread row 106 may include a second set of tread
blocks. Each tread block in the second set of tread blocks is arranged in a second orientation, such that the second orientations is opposite to the first orientation. In an example, the second orientation may be aligned along counter-clockwise orientation of the tire. In another example, the second orientation may be aligned along clockwise orientation of the tire. In yet another example, the second set of tread block may be formed between a third circumferential groove 120 and a fourth circumferential groove 122. Further, each tread block may include a talon shaped groove 124 in the counter-clockwise orientation of the tire.
[0028] The talon shaped groove 124 in tread block of the second set of tread blocks
may be formed by a third transverse groove 126 and a fourth transverse groove 128.
The third transverse groove 126 and the fourth transverse groove 128 may be
extending from a section of the fourth circumferential groove 122 towards the third
circumferential groove 120. Further, the third transverse groove 126 and the fourth
transverse groove 128 may converge at a second common vertex 130. In an example,
the third transverse groove 126 and the fourth transverse groove 128 may be curved
grooves. In another example, curve profile of the third transverse groove 126 and the
fourth transverse groove 128 are aligned along the counter-clockwise orientation.
[0029] In an example implementation of the present subject matter, height of the
first common vertex 118 and height of the second common vertex 130 may be equal to tread block height BH as shown in figure 1.
[0030] In another example, the third transverse groove 126 and the fourth
transverse groove 128 may be formed at a predetermined distance from equator M of the tire. In an example, the third transverse groove 126 may have a third radius D3. The third radius D3 may vary based on second width R2 of the second circumferential tread row 106 and the third radius D3 may be equal to the first radius D1 when first width R1 is equal to the second width R2. In another example, the fourth transverse groove 128 may have a fourth radius D4. The fourth radius D4 may vary based on the

second width R2 of the second circumferential tread row 106 and the fourth radius D4 may be equal to the second radius D2 when first width R1 is equal to the second width R2.
[0031] Thus, the tread pattern 100 of the first set of tread block and the second set
of tread block are symmetrical, as blocks in the first set of tread blocks and the second set of tread blocks include similar talon shaped grooves. Further, the first set of tread blocks and the second set of tread blocks are aligned along opposite directions around the central circumferential tread row 104.
[0032] In an implementation of the present subject matter, each tread block from
amongst the multiple tread blocks of the second set of tread block is defined by a section of the third circumferential groove 120 on one side. In an example, the section of the third circumferential groove 120 may have a length equal to tread block height BH. In an embodiment of the present subject matter, different tread blocks in a circumferential tread row may have different tread block height. In another embodiment, all tread blocks in a circumferential tread row may have same tread block height.
[0033] In an embodiment, each of the tread block may also include the central
circumferential tread row 104. The central circumferential tread row 104 may be positioned between the second circumferential groove 110 and the third circumferential groove 120. The central circumferential tread row 104 may include multiple tread blocks. In an example, each block from amongst the multiple tread blocks may include a S-shaped groove G1, such that the S-shaped groove G1 begins at one corner of the block and extend till diagonally opposite corner of the block. In another example, thickness of the S-shaped groove G1 may vary along width of the central circumferential tread row 104, such that thickness of the S-shaped groove G1 may be high in center of the tread block and reduces towards the circumferential grooves.

[0034] In an example, the first transverse groove 114 of the first set of tread block
and the third transverse groove 126 of the second set of tread block that delimit a first block in respective set of tread block is separated from a transverse groove that delimits a circumferentially adjacent block by a solid tread portion.
[0035] Fig. 2 illustrates schematics of tire with the tread pattern 100, in accordance
with an implementation of the present subject matter. The tread pattern 100, in addition to the talon shaped grooves in tread blocks, also includes an intermediary rib. In an example, each tread block may include an intermediary rib. The intermediary rib may be understood as a portion of the solid tread formed adjacent to the talon shaped groove.
[0036] In an implementation of the present subject matter, the intermediary rib
may be in profile of the talon shaped groove. The intermediary rib may be located
between an intermediary groove and a transverse groove of the talon shaped groove in
the block, such that the intermediary groove and the transverse groove merge at
common vertex where transverse grooves defining the talon shaped groove merge.
[0037] For example, a first intermediary groove 202 may be located in a tread
block of the first set of tread block. The first intermediary groove 202 may merge with the first transverse groove 114 and the second transverse groove 116 at the first common vertex 118 to form a first intermediary rib 204. In an example, the first intermediary groove 202 may have a curved profile. Further, the curved profile of the first intermediary groove 202 may be similar to the curved profile of the first transverse groove 114 and the second transverse groove 116. Accordingly, the first intermediary groove 202 along with the second transverse groove 116 may form a talon shaped profile of the first intermediary rib 204. However, the talon shaped profile formed by the first intermediary groove 202 along with the second transverse groove 116 may be formed by a solid tread portion in profile of a talon. In another example, the first intermediary rib 204 may be positioned in clockwise orientation to correspond to clockwise orientation of the talon shaped groove 112 in the first set of tread blocks.

[0038] In an implementation, the intermediary rib may be positioned in counter-
clockwise orientation, when the first set of tread blocks are orientated in counter-clockwise orientation.
[0039] In an example, the first intermediary groove 202 may be formed at a
predetermined distance from equator M of the tire. Further, the first intermediary
groove 202 may have a first intermediary radius I1. The first intermediary radius I1
may vary based on the first width R1 of the first circumferential tread row 102.
[0040] In an implementation, a second intermediary groove 206 may be located in
a tread block of the second set of tread block. The second intermediary groove 206 may merge with the third transverse groove 126 and the fourth transverse groove 128 at the second common vertex 130 to form a second intermediary rib 208. In an example, the second intermediary groove 206 may have a curved profile. Further, the curved profile of the second intermediary groove 206 may be similar to the curved profile of the third transverse groove 126 and the fourth transverse groove 128. Accordingly, the second intermediary groove 206 along with the fourth transverse groove 128 may form a talon shaped profile of the second intermediary rib 208. However, the talon shaped profile formed by the second intermediary groove 206 along with the fourth transverse groove 128 may be formed by a solid tread portion in profile of a talon. In another example, the intermediary rib may be positioned in counter-clockwise orientation to correspond to counter-clockwise orientation of the talon shaped groove 124 in the second set of tread blocks.
[0041] In an implementation, the intermediary rib may be positioned in clockwise
orientation, when the second set of tread blocks are orientated in clockwise orientation.
[0042] In an example, the second intermediary groove 206 may be formed at a
predetermined distance from equator M of the tire. Further, the second intermediary groove 206 may have a second intermediary radius I2. The second intermediary radius I2 may vary based on the second width R2 of the second circumferential tread row 106.

[0043] During motion of the vehicle, when the tire contacts with surface the talon
shaped grooves in form of cavity in the first set of tread blocks and the second set of
tread blocks provides air channeling, such that noise generated due to air channeling
in clockwise orientation by the first set of tread blocks is negated by noise generated
due to air channeling in counter-clockwise orientation by the second set of tread
blocks. Hence, the tire with tread pattern 100 according to present subject matter has
better noise profile over tires with conventional tread patterns. Further, the
intermediary rib in each tread block increases contact surface of the tire with the
surface during the motion, amounting to enhanced braking performance of the tire.
[0044] Fig. 3 illustrates a circumferential spike in the tread pattern 100, in
accordance with an implementation of the present subject matter. The tread pattern 100, in addition to the talon shaped grooves and the intermediary rib in tread blocks also includes a circumferential spike. In an example, each tread block may include an individual circumferential spike. The circumferential spike may be understood as a portion of the solid tread positioned below the talon shaped groove and the intermediary rib in the tread block.
[0045] In an exemplary implementation of the present subject matter, the
circumferential spike may be in profile of a lower case ‘i’. Further, the circumferential spike may be formed by a solid tread portion of the tire. In an embodiment, the circumferential spike in each block may be formed along orientation opposite to the orientation of the talon shaped groove and the intermediary rib. Accordingly, for the first set of tread blocks, in each tread block a first circumferential spike 302 may be formed in counter-clockwise orientation along the first circumferential groove 108. Similarly, for the second set of tread blocks, second circumferential spike 304 in each tread block may be formed in clockwise orientation along the fourth circumferential groove 122.
[0046] In an example, the circumferential spike in each tread block may be placed
adjacent to the intermediary rib and may extend to a transverse groove that delimits a

circumferentially adjacent block. Hence, the circumferential spike may cover each tread block partially by leaving entry 306 of the talon shaped groove open for adequate air channeling.
[0047] During the motion as elaborated with respect to Fig. 2, the circumferential
spike in each tread block may amount to improved braking performance of the tire, as the circumferential spike provides additional surface for contact of the tire. Hence, the circumferential spike enhances safety and handling of vehicle by improving braking performance of the tire.
[0048] Fig. 4 illustrates a contact patch of the tire with the tread pattern 100, in
accordance with an implementation of the present subject matter. As illustrated, the
contact patch of the tire has a rectangular profile. The rectangular contact patch may
have a width FW and a height FH. In an example, the rectangular contact patch may
have maximum width to maximum height ratio in range of 0.8 to 0.85, that is:
[0049] FW÷FH >= 0.8 to 0.85 =<
[0050] The rectangular contact patch amounts to uniform distribution of pressure
across tread pattern 100 of the tire. As a result of uniform distribution of pressure, all regions of the tread pattern 100 may uniformly contact with surface, amounting to even wear in all regions of the tread pattern 100. Since, one region of the tread pattern 100 is not impacted under pressure, and the pressure is distributed, life of the tire increases.
[0051] Fig. 5 illustrates a tire with tread pattern 100 axially delimited by two
shoulder regions 500 and 502. The tread pattern 100 is provided with circumferential grooves (Fig. 1) which extend in longitudinal direction and are parallel to an equatorial plane of the tire. The tread pattern 100 includes plurality of circumferential tread rows separated by circumferential grooves. The circumferential grooves may be understood as a recess in the tread portion of the tire along circumference of the tire. The tire tread pattern 100 may also include transverse grooves.

[0052] Tables 1, 2 and 3 in following paragraphs discloses data obtained by
observing noise profile of various tires when the tire are provided with tread pattern 100 in accordance with the present subject matter.
[0053] Table 1 lists various combination of block height BH and pitch P of a tire
used for a specific tread width TW. Table 1 has data corresponding to tire with tread
width TW varying from 125 mm to 245 mm. The tires have symmetric tread pattern
100, in accordance with an implementation of the present subject matter. Table 1 lists
tires with four types of pitch design and 68 number of pitches circumferentially
arranged for a given tread width TW. Pitch 1 (P1) has 22 times repetition units of tread
blocks in accordance with the present subject matter, Pitch 2 (P2) has 19 times
repetition units of the tread blocks, Pitch 3 (P3) has 16 times repetition units of the
tread blocks and Pitch 4 (P4) has 11 times repetition units of the tread blocks.
[0054] In an example, a pitch may have a relation with outer diameter of a tire.
For example, Pitch 1 (P1) has length in range of 25~27% perimeter of outer diameter
of the tire, Pitch 2 (P2) has length in range of 25~27% perimeter of the outer diameter
of the tire, Pitch 3 (P3) has length in range of 25~27% perimeter of the outer diameter
of the tire and Pitch 4 (P4) has length in range of 19~21% perimeter of the outer
diameter of the tire. Table 1 also lists variation of block height BH for various tread
width TW with a specific pitch. The block height BH is obtained by multiplying tread
width TW with percentage of block height. For example, BH-1 is equal to tread width
into percentage of block height whichever value arrives that is BH-1. Similarly, BH-
2, BH-3 and BH-4 are also calculated. In an exemplary embodiment, the difference in
pitch length improves noise profile of the tire. Thus, higher the pitch range, lower is
noise in the tire.
[0055] Table 1

T W
24 5
23 5
22 5
21 5
20 5
19 5
18 5
17 5
16 5
15 5
14 5
13 5 BH- 1 P1 BH – 2 P2 BH- 3 P3 BH- 4 P4

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%

12 5 15% -20% 12% -17% 18% -22% 16% -22% 21% -26% 19% -24% 27% -32% 22% -28%
[0056] Table 2

TW R1 (or R2) D1 (or D3) D2 (or D4) I1 (or I2)
245 11% -17% 13%-16% 13%-18% 12%-17%
235 11% -17% 13%-16% 13%-18% 12%-17%
225 11% -17% 13%-16% 13%-18% 12%-17%
215 11% -17% 13%-16% 13%-18% 12%-17%
205 11% -17% 13%-16% 13%-18% 12%-17%
195 11% -17% 13%-16% 13%-18% 12%-17%
185 11% -17% 13%-16% 13%-18% 12%-17%
175 11% -17% 13%-16% 13%-18% 12%-17%
165 11% -17% 13%-16% 13%-18% 12%-17%
155 11% -17% 13%-16% 13%-18% 12%-17%
145 11% -17% 13%-16% 13%-18% 12%-17%
135 11% -17% 13%-16% 13%-18% 12%-17%
125 11% -17% 13%-16% 13%-18% 12%-17%
[0057] Table 2 provides a relationship between the tread width TW, the first width
R1, the first radius D1, the second radius D2, and the first intermediary radius I1. As mentioned in table 2, the tread width TW ranges in between 125 mm to 245 mm. In an example, since the first circumferential tread row 102 is symmetrical in tread pattern 100 with the second circumferential tread row 106, for the purpose of table 2, the first width R1 may be equal to second width R2. Similarly, the first radius D1 may

be equal to the third radius D3, the second radius D2 may be equal to the fourth radius
D4, and the first intermediary radius I1 may be equal to the second intermediary radius
I2.
[0058] Table 3

TW (mm) Noise (dBA)
225 61.5
215 61.0
205 60.5
195 60.0
185 59.5
175 59.0
165 58.5
155 58.0
145 57.5
[0059] Table 3 lists noise profile of tires having tread pattern 100 disclosed by the
present subject matter. The noise profiles in table 3 are listed for tires with different tread width TW. The tread width TW is measured in millimeters (mm) and noise in the tire is measured in decibel (dBA).
[0060] Thus, based on various implementations and data obtained from tires
having the tread pattern 100 disclosed by the present subject matter formed on them, the tread pattern 100 disclosed by the present subject matter provides improved braking and reduced noise of the tire. For example, improvement in overall noise from 59 dBA to 58 dBA is obtained. Further, improvement in dry braking distance by 1.5

meter at speed of 60 Kmph is obtained. Additionally, an improvement in wet braking distance by 0.4 meter at speed of 80 Kmph is obtained.
[0061] Although implementations for tire tread configuration are described, it is
to be understood that the present subject matter is not necessarily limited to the specific features of the systems described herein. Rather, the specific features are disclosed as implementations for tire tread configuration.

I/We Claim:
1. A tire having a tread region and a shoulder region on either side of the tread
region, the tire comprising:
a first circumferential groove (108), a second circumferential groove (110), a third circumferential groove (120) and a fourth circumferential groove (122), along the length of the tire so as to form a first circumferential tread row (102), a central circumferential tread row (104) and a second circumferential tread row (106) in the tread region, the central circumferential tread row (104) being formed between the first circumferential tread row (102) and the second circumferential tread row (106);
the first circumferential tread row (102) comprising a first set of tread blocks, each tread block arranged in a first orientation between the first circumferential groove (108) and the second circumferential groove (110), wherein each tread block includes a talon shaped groove (112) along the first orientation, the talon shaped groove (112) is formed by:
a first transverse groove (114) and second transverse groove (116) extending from a section of the first circumferential groove (108) towards the second circumferential groove (110) to converge at a first common vertex (118), wherein curve profile of the first transverse groove (114) and the second transverse groove (116) is aligned in the first orientation; and
the second circumferential tread row (106) comprising a second set of tread blocks each tread block arranged in a second orientation between the third circumferential groove (120) and the fourth circumferential groove (122), wherein each tread block includes a talon shaped groove (124) along the second orientation, the talon shaped groove (124) is formed by:
a third transverse groove (126) and a fourth transverse groove (128) extending from a section of the fourth circumferential groove (122) towards the third circumferential groove (120) to converge at a second common vertex

(130), wherein curve profile of the third transverse groove (126) and the fourth transverse groove (128) is aligned in the second orientation,
wherein the first set of tread block and the second set of tread block are symmetrical in pattern and the first orientation and the second orientation are opposite to each other around the central circumferential tread row (104).
2. The tire as claimed in claim 1, wherein adjacent tread blocks in the first set of tread blocks and the second set of tread blocks have different block height along circumferential grooves of the tire.
3. The tire as claimed in claim 1, further comprising an intermediary rib (204, 208) in each block of the first set of tread block and the second set of tread block.
4. The tire as claimed in claim 3, wherein the intermediary rib (204, 208) is formed by a solid tread portion in profile of a talon.
5. The tire as claimed in claim 3, further comprising a circumferential spike (302, 304) in each block of the first set of tread block and the second set of tread block.
6. The tire as claimed in claim 5, wherein the circumferential spike (302,304) is formed by a solid tread portion in profile of lower case ‘i’.
7. The tire as claimed in claim 5, wherein the circumferential spike (302,304) is placed adjacent to the intermediary rib (204, 208) and extends to a traverse groove that delimits a circumferentially adjacent block.
8. The tire as claimed in claim 1, wherein the tire forms a rectangular contact patch with maximum width to maximum height ratio (FW/FH) in range of 0.8 to 0.85.

9. The tire as claimed in claim 1, wherein the first circumferential tread row (102) and the second circumferential tread row (106) have a first width (R1) and a second width (R2), wherein the first width (R1) and the second width (R2) is less than tread width (TW) of the tire.
10. The tire as claimed in claim 1, wherein the first transverse groove (114), the second transverse groove (116), the third transverse groove (126), the fourth transverse groove (128), first intermediary groove (202), and second intermediary groove (206) have first radius (D1), second radius (D2), third radius (D3), fourth radius (D4), a first intermediary radius (I1) and a second intermediary radius (I2) respectively.