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1、BRITISH STANDARD BS ISO 4249-3:2004 Motorcycle tyres and rims (code-designated series) Part 3: Rims ICS 43.140 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4249-3:2004 This British Standard was published under the authority of th
2、e Standards Policy and Strategy Committee on 25 August 2005 BSI 25 August 2005 ISBN 0 580 46210 2 National foreword This British Standard reproduces verbatim ISO 4249-3:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee AU
3、E/4, Tyres and wheels for motor vehicles, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in
4、 the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsib
5、le for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK in
6、terests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 11 and a back cover. The BSI copyright notice displayed in this docum
7、ent indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 4249-3:2004(E) INTERNATIONAL STANDARD ISO 4249-3 Fifth edition 20
8、04-11-15 Motorcycle tyres and rims (code-designated series) Part 3: Rims Pneumatiques et jantes pour motocycles (sries dont les dimensions sont dsignes par des codes) Partie 3: Jantes BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy
9、, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Forewordiv 1 Scope 1 2 Normative references . 1 3 Finish 1 4 Designation 3 5 Cylindrical bead seat 3 6 Tapered bead seat rims (MT type). 4 7 Permitted rim widths.
10、 8 Annex A (informative) Rim circumference measurement Tapered bead seat (MT type) rims. 9 Bibliography . 11 BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardizati
11、on) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be re
12、presented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards
13、are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internati
14、onal Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4249-3 was
15、prepared by Technical Committee ISO/TC 31, Tyres, rims and valves, Subcommittee SC 10, Cycle, moped, motorcycle tyres and rims. This fifth edition cancels and replaces the fourth edition (ISO 4249-3:1997), which has been technically revised. It also incorporates the Amendment ISO 4249-3:1997 Amd. 1:
16、2001. ISO 4249 consists of the following parts, under the general title Motorcycle tyres and rims (code-designated series): Part 1: Tyres Part 2: Tyre load ratings Part 3: Rims BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) B
17、SI 1 Motorcycle tyres and rims (code-designated series) Part 3: Rims 1 Scope This part of ISO 4249 specifies the rim dimensions for a selection of rims for motorcycle tyres. It sets only those rim contour dimensions necessary for tyre mounting, and for fitting the tyre to the rim. 2 Normative refere
18、nces The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4249-1:1985, Motorcycle tyres and rims (
19、Code designated series) Part 1: Tyres 3 Finish 3.1 Rim contour The rim on the side of the tyre shall be smoothly contoured and free of sharp edges. 3.2 Rim valve hole 3.2.1 The rim valve hole shall be centred on the bottom of the rim well. On the tyre side, the edges shall be rounded or chamfered. O
20、n the hub side, the edges shall be free of burrs, which could damage the valve. Dimensions and tolerances of valve holes shall be as shown in Figure 1. 3.2.2 The rim hole shall have a diameter of 0,3 0 8,3mm. + See Figure 1 a). For the fitment of tubeless valves, a circumferential flat area of at le
21、ast 14,5 mm is required on the tyre side of the rim. The maximum thickness of the rim at the rim hole shall be 9,4 mm. See Figure 1 b). At the request of the motorcycle manufacturer, rim holes of 0,4 0 11,3mm + diameter may be provided; in this case, the flat area around the hole shall be at least 1
22、9 mm diameter. For the possibility of off-centre positioning, see Figure 1 c). 3.2.3 The rim shall be counter-bored at the valve hole to reduce the thickness to 4 mm maximum for seating snap-in valves. BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006,
23、 Uncontrolled Copy, (c) BSI BS ISO 4249-3:2004 2 Dimensions in millimetres a) Tube-type valve b) Tubeless valves c) Off-centre (optional)c a Optional. b See 3.2.3. c For rim codes MT 3.00 and larger, if the well contour offers sufficient space for the location of the flat area, the valve hole may be
24、 positioned on the sidewall of the well. Figure 1 Valve hole dimensions Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4249-3:2004 3 4 Designation The rim shall be designated by its nominal rim diameter code and nominal rim width (fo
25、r example, 18 1.85 or 17M/C MT 3.50). See also ISO 3911. 5 Cylindrical bead seat 5.1 Rim contours Dimensions and tolerances of the cylindrical bead seat rims shall be as shown in Figure 2 and as given in Table 1. a See Table 2. Figure 2 Cylindrical bead seat rims Table 1 Dimensions of cylindrical be
26、ad seat rims Dimensions in millimetres Nominal rim width A B G H P C R2 R1 R3 R4 R5 inches +1 0,5 min. 0,5 +1 0,5 min. min. max. min. min. 1.10 28 5 7 5 5,5 1.20 30,5 5,5 9 7 3 5,5 6 1,5 1.35 34 7,5 7 1.40 36 6,5 10 3,5 6 6,5 1,5 5 10 1.50 38 10,5 4 6,5 7 11,5 1.60 40,5 7,5 12 8 4,5 7,5 8 5,5 13 1.8
27、5 47 5 6 15 2.15 55 8,5 2 18,5 2.50 63,5 9,5 9 7,5 2 2.75 70 3.00 76 10,5 14 12 11 10,5 12,5 3 3 7 19 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 5.2 Rim diameters Nominal rim diameter code, specified diameters and circumferences shall
28、 be as given in Table 2. Table 2 Specified rim diameters and circumferences for cylindrical bead seat rims Dimensions in millimetres Nominal rim diameter codea Specified rim diameter Specified rim circumference D pD + 2 0,5 14 357,1 1 121,9 15 382,5 1 201,7 16 405,6 1 274,2 17 433,3 1 361,2 18 458,7
29、 1 441 19 484,1 1 520,8 20 509,5 1 600,6 21 534,9 1 680,4 22 558,8 1 755,5 23 584,2 1 835,3 a The suffix M/C is optionally allowed. 6 Tapered bead seat rims (MT type) 6.1 Rim contours Dimensions and tolerances of tapered bead seat rims shall be as shown in Figure 3 and as given in Table 3. Optional
30、well contours are shown in Figures 4 and 5, and given in Table 4. NOTE For D and DH, see 6.3. Figure 3 5 tapered bead seat rim contours (MT type) BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 Table 3 Dimensions of tape
31、red bead seat rims Dimensions in millimetres A B C E a G H R1 R2 R3 R4 R5 b R6 R7 Nominal rim width code tol. min. tol. tol. min.min. max. 0,5 min. 0,5 0,5 MT 1.50 38 7,5 6,5 10 7 MT 1.60 40,5 8,5 10 12 8 2,5 MT 1.85 47 12 +0,5 0 MT 2.15 55 +1 0,5 0,5 9 3 MT 2.50 63,5 13 MT 2.75 70 14 12 MT 3.00 76
32、MT 3.50 89 15 MT 3.75 95 MT 4.00 101,5 MT 4.25 108 MT 4.50 114,5 MT 5.00 127 MT 5.50 140 MT 6.00 152,5 MT 6.25 159 MT 6.50 165 MT 7.00 178 MT 7.50 190,5 MT 8.00 203 MT 8.50 216 MT 9.00 228,5 MT 9.50 241,5 +1,5 1 9 10,5 16 +2 0 14 +1 0,5 13 3 12,5 2,5 5,5 3 3 2,5 a E = hump location. See Figure 6 and
33、 Table 5 for rims without humps. b For MT 2.50 and larger rims, the well contour may be a rounded shape with R = full radius. See Option 2, Figure 5. BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 Key R full radius Figu
34、re 4 Well contour Option 1 Table 4 Well contour Option 1 Dimensions in millimetres R5a R Nominal rim width code min. min. MT 1.85 MT 2.15 20 MT 2.50 MT 2.75 30 MT 3.00 MT 3.50b 3 40 a For MT 2.50 and larger rims, the well contour may be a rounded shape with R = full radius. (See Option 2, Figure 5.)
35、 b Well contour dimensions apply also for wider nominal width codes. Key R full radius Figure 5 Well contour Option 2 BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 6.2 Bead seat contours Bead seat contours for rims wit
36、hout hump shall be as shown in Figure 6 and as given in Table 5. Rims without hump shall only be used with tyres for tube-type applications. Figure 6 Bead seat contours for rims without hump Table 5 Bead seat contours for rims without hump Dimensions in millimetres P Nominal rim width code +2 0 MT 1
37、.50 4 MT 1.60 5 MT 1.85 8 MT 2.15 11 6.3 Rim diameter and hump circumference The nominal rim diameter code, specified rim diameter and hump circumference shall be as given in Table 6. Annex A provides a procedure that may be used for determining the measuring rim diameter and the measuring rim circu
38、mference when an 8 mm ball tape is used for checking MT rims. BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8 Table 6 Specified rim diameters and hump circumferences for MT rim contours Dimensions in millimetres Specifie
39、d rim diametera D Hump circumference pDH Nominal rim diameter code + 2 1 13 M/C 332,2 1 041,5 14 M/C 357,6 1 121,3 15 M/C 383 1 201,2 16 M/C 406 1 273,4 b 17 M/C 433,8 1 360,7 18 M/C 459,2 1 440,5 19 M/C 484,6 1 520,3 20 M/C 510 1 600,1 21 M/C 535,4 1 679,9 23 M/C 584,7 1 837,8 NOTE “M/C” suffix for
40、 nominal rim diameter codes 16 M/C and above is optional for rims manufactured before May 2003. a The tolerance on the bead seat periphery is +1,5 0,5 .mm b For code 16 M/C, the tolerance on the bead seat periphery is 1 mm. 7 Permitted rim widths 7.1 Permitted rim widths for the code-designated seri
41、es of motorcycle tyres shall be in accordance with Table 7. NOTE For permitted rim widths for the metric series of motorcycle tyres, see ISO 5751-3. Table 7 Permitted rim widths Tyre section Permitted rim widthsa 2.00 1.10; 1.20; 1.35 2.25 1.20; 1.35; 1.40; 1.50; 1.60 2.50 1.35; 1.40; 1.50; 1.60 2.7
42、5 1.40; 1.50; 1.60; 1.85 3.00 1.60; 1.85; 2.15 3.25 1.85; 2.15; 2.50 3.50 1.85; 2.15; 2.50 3.75 1.85; 2.15; 2.50 4.00 2.15; 2.50; 2.75; 3.00 4.25 2.15; 2.50; 2.75; 3.00 4.50 2.15; 2.50; 2.75; 3.00 5.00 2.50; 2.75; 3.00; 3.50 a MT contours may also apply. The measuring rim width for a given tyre sect
43、ion shall be obtained in accordance with ISO 4249-1:1985, Table 3. BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 9 Annex A (informative) Rim circumference measurement Tapered bead seat (MT type) rims The bead seat rim ci
44、rcumference measurements shall be made using a tape gauge the length of which is related to a mandrel with diameter DM. The tolerance on this diameter is 0 0,15 mm. To ensure accuracy, each bead seat shall be measured separately. When an 8 mm ball tape is used for checking tapered bead seat rims, th
45、e dimensions given in Figure A.1 and Table A.1 apply. Dimensions in millimetres a Specified rim diameter. Figure A.1 Rim circumference measurement BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 10 Table A.1 Rim circumfere
46、nce measurement Dimensions in millimetres Diameter DM Circumference pDM Nominal rim diameter code +1,5 0,5 13 M/C 331,53 1 041,5 14 M/C 356,93 1 121,3 15 M/C 382,33 1 201,1 16 M/C 405,33 1 273,4a 17 M/C 433,13 1 360,7 18 M/C 458,53 1 440,5 19 M/C 483,93 1 520,3 20 M/C 509,33 1 600,1 21 M/C 534,73 1
47、679,9 23 M/C 584,03 1 834,8 a For code 16 M/C, the tolerance on the circumference is 1 mm. BS ISO 4249-3:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 11 Bibliography 1 ISO 3911, Wheels and rims for pneumatic tyres Vocabulary, designa
48、tion and marking 2 ISO 4000-2, Passenger car tyres and rims Part 2: Rims 3 ISO 4249-2, Motorcycle tyres and rims (Code-designated series) Part 2: Tyre load ratings 4 ISO 5751-3, Motorcycle tyres and rims (metric series) Part 3: Range of approved rim contours BS ISO 4249-3:2004 Licensed Copy: sheffie
49、ldun sheffieldun, na, Sun Nov 26 14:17:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4249-3:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions Briti