We Claim:
1. A method of manufacturing a disc for a wheel, comprising the steps of:
providing (701) a blank in a circular shape, wherein the blankincluding
acircumferential surface (101a), an axially inward surface (101b) and an
axially outward surface (101c);
forming (702) the blank to obtain a preform disc with a disc flange and a
central portion, wherein the disc flange inclined axially relative to the central
portion;
creating(703) a plurality of holeson thepreform discto obtain a plurality of
vent holes, bolt holes and a central bore; and
machining(704) the circumferential surface of the preform discto obtain a
profiled portion (311, 511) for engaging with a radially inward surface of a
rim, thereby manufacturing the disc.
2. The method as claimed in claim 1, wherein engaging the profiled portion (311, 511) with the radially inward surface of a gutter region (203) on the rim; and wherein a profile of the profiled portion (311, 511) matching with a profile of the radially inward surface of the gutter region (203) for increasing contact area between the disc and the rim, thereby reducing stresses on the discand the gutter region.
3. The method as claimed in claim 1, wherein forming the blank to incline the disc flange (303) axially outward relative to the central portion (305).
4. The method as claimed in claim 3, wherein the machining performed on an inner surface (310b) of the circumferential surface(101a) and an upper portion (309) of an inner tapered surface (303a) of the disc flange (303) for obtaining the profiled portion (311).

5. The method as claimed in claim 3, wherein the profiled portion (311)
including a first surface (311a) extending from an outer portion (310a) of the
circumferential surface (101a)and a second surface(311b) extending from the
first surface (311a) to an inner tapered surface (303a) of the axially inward
surface (101b); and
wherein a shape of the first surface (311a) is a curve for contactingand supporting a second gutter surface (207) on the radially inward surface of the rimand a shape of the second surface (311b) is flat for contacting and seatinga third gutter surface (209) on the radially inward surface of the rim.
6. The method as claimed in claim 3, wherein welding the disc to the rim for obtaining a first weld (401) betweenan outer portion (310a) of the circumferential surface (101a) and a first gutter surface (205) of the radially inward surface of the gutter region (203) andobtaining a second weld(403) between an inner tapered surface (303a) of the disc flange (303)and a fourth gutter surface(211) of the radially inward surface of the gutter region(203).
7. The method as claimed in claim 1, wherein forming the blank to incline the disc flange (503) axially inward relative to the central portion (505).
8. The method as claimed in claim 7, wherein the machining performed on the circumferential surface (101a) and an upper portion (509) of an inner tapered surface (503a) of the disc flange (503) for obtaining the profiled portion (511).
9. The method as claimed in claim7, wherein the profiled portion(511) including a first surface (511a) extending from an outer tapered surface (503b) of the disc flange (503) and a second surface (511b) extending from the first surface (511a) to an inner tapered surface (503a) of the axially inward surface; and

wherein a shape of the first surface (511a) is a curve for contactingand supporting a second gutter surface (207) on the radially inward surface of the rimanda shape of the second surface(511b) is flat for contacting and seating a third gutter surface (209) on the radially inward surface of the rim.
10. The method as claimed in claim 7, wherein welding the disc to the rim for obtaining a first weld (601) between an outer tapered surface (503b) of the disc flange (503) and a first gutter surface (205) of the radially inward surface of the gutter region (203) and obtaining a second weld(603) between an inner tapered surface (503a) of the disc flange (503) and a fourth gutter surface (211) of the radially inward surface of the gutter region (203).
11. The method as claimed in claim 1, wherein a radius of curvature between the disc flange (303, 503) and the central portion(305, 505) is selected from a range of 15mm to 25mm.
12. The method as claimed in claim 1, wherein the forming (702) including one of press forming, and spinning and press forming for obtaining the preform disc.
13. The method as claimed in claim 1, wherein the machining (704) including a process of turning for obtaining the profiled portion (311,511).
14. The method as claimed in claim 1, wherein the vent holes (307, 507) are obtained by a piercing process on the preform disc.
15. The method as claimed in claim 3, wherein the disc flange inclined axially outward relative to the central portion at an angle A in a range between 18° to 24°.

16. The method as claimed in claim 7, wherein the disc flange inclined axially inward relative to the central portion at an angle B in a range between 20° to 34°.
17. A disc for a wheel, comprising:
a disc flange (303, 503) including an inner tapered surface (303a, 503a) and an
outer tapered surface (303b, 503b);
a central portion (305, 505);
wherein the disc flange (303, 503) inclined axially relative to the central
portion (305, 505); and
a profiled portion (311, 511) defined on a circumferential surface of the disc
flange (303, 503) for engaging with a radially inward surface of a rim.
18. The disc as claimed in claim 17, wherein the profile portion (311, 511) welded tothe radially inward surface of a gutter region (203) of the rim (201).
19. The disc as claimed in claim 17, wherein the disc flange (303) inclined axially outward relative to the central portion (305);
wherein the profiled portion (311) including a first surface (311a) and a second surface (311b); and
wherein the first surface (311a)extending from an outer portion (310a) on the circumferential surface of the disc flange (303) and the second surface (311b) extending from the first surface (311a) to the inner tapered surface (303a) of the disc flange (303).
20. The disc as claimed in claim 19, wherein a first weld (401) providedbetween
the outer portion (310a) and a first gutter surface (205) of the radially inward
surface of a gutter region (203) of the rim and a second weld(403) provided

between the inner tapered surface (303a) and a fourth gutter surface (211) of the radially inward surface of a gutter region (203) of the rim.
21. The disc as claimed in claim 17, wherein the disc flange (503) inclined axially
inward relative to the central portion (505);
wherein the profiled portion (511) including a first surface (511a) and a
second surface (511b); and
wherein the first surface (511a) extending from an outer tapered surface
(503b) of the disc flange (503) and the second surface (511b) extending from
the first surface (511a) to the inner tapered surface (503a) of the disc flange
(503).
22. The disc as claimed in claim 21, wherein a first weld (601) provided between the outer tapered surface (503b) and a first gutter surface (205) of the radially inward surface of a gutter region (203) of the rim and a second weld (603) provided between the inner tapered surface (503a) and a fourth gutter surface (211) of the radially inward surface of a gutter region (203) of the rim.
23. The disc as claimed in claims 18 and 19, wherein a shape of the first surface (311a, 511a) is a curve for contactingand supporting a second gutter surface (207) on the radially inward surface of the rim and a shape of the second surface (311b, 511b) is flat for contacting and seating a third gutter surface (209) on the radially inward surface of the rim.