1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 4249-3:2010Motorcycle tyres and rims(code-designated series)Part 3: RimsBS ISO 4249-3:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation
2、of ISO 4249-3:2010. Itsupersedes BS ISO 4249-3:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/4, Tyres and wheels for motor vehicles.A list of organizations represented on this committee can beobtained on request to its secretary.This publicat
3、ion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010 ISBN 978 0 580 67623 9 ICS 43.140 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the author
4、ity of theStandards Policy and Strategy Committee on 31 December 2010. Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 4249-3:2010Reference numberISO 4249-3:2010(E)ISO 2010INTERNATIONAL STANDARD ISO4249-3Sixth edition2010-11-15Motorcycle tyres and rims (code-designated series)
5、Part 3: Rims Pneumatiques et jantes pour motocycles (sries dont les dimensions sont dsignes par des codes) Partie 3: Jantes BS ISO 4249-3:2010ISO 4249-3:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed
6、 but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in th
7、is area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for
8、 use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized
9、in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41
10、22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 4249-3:2010ISO 4249-3:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Finish 1 3.1 Rim contour .1 3.2 Rim valve hole .1 4 Designati
11、on 3 5 Cylindrical bead seat.3 5.1 Rim contours .3 5.2 Rim diameters4 6 Tapered bead seat rims (MT type) .4 6.1 Rim contours .4 6.2 Bead seat contours .6 6.3 Rim diameter and hump circumference7 7 Permitted rim widths.7 Annex A (informative) Rim circumference measurement Tapered bead seat (MT type)
12、rims9 Bibliography11 BS ISO 4249-3:2010ISO 4249-3:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out
13、 through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO col
14、laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards 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 S
15、tandards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International 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
16、 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 prepared by Technical Committee ISO/TC 31, Tyres, rims and valves, Subcommittee SC 10, Cycle, moped, motorcycle tyres and rims. This sixth edition ca
17、ncels and replaces the fifth edition (ISO 4249-3:2004), which has been technically revised. 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 4249-3:2010INTERNATIONAL STAND
18、ARD ISO 4249-3:2010(E) ISO 2010 All rights reserved 1Motorcycle 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 stipulates only those rim contour dimensions necessary for tyre mounting, a
19、nd for fitting the tyre to the rim. 2 Normative references 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)
20、 applies. ISO 4249-1:1985, Motorcycle tyres and rims (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
21、 tyre side, the edges shall be rounded or chamfered. On 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 See Figure 1 a). 0,50,18,3 mm+For the fitment of t
22、ubeless valves, a circumferential flat area of at least 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 diameter may be provided; in this case, the flat are
23、a around the hole shall be at least 19 mm diameter. 0,4011,3 mm+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 4249-3:2010ISO 4249-3:2010(E) 2 ISO 2010 A
24、ll rights reservedDimensions in millimetres a) Tube-type valve b) Tubeless valves c) Off-centre (optional)caOptional. bSee 3.2.3. cFor 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 positioned on the sidewall of the
25、well. Figure 1 Valve hole dimensions BS ISO 4249-3:2010ISO 4249-3:2010(E) ISO 2010 All rights reserved 34 Designation The rim shall be designated by its nominal rim diameter code and nominal rim width (for example, 18 1.85 or 17 M/C MT 3.50). See also ISO 3911. 5 Cylindrical bead seat 5.1 Rim contou
26、rs Dimensions and tolerances of the cylindrical bead seat rims shall be as shown in Figure 2 and as given in Table 1. aSee Table 2. Figure 2 Cylindrical bead seat rims Table 1 Dimensions of cylindrical bead seat rims Dimensions in millimetres Nominal rim width A B G H P C R2R1R3R4R5inches +10,5+1min
27、. 0,5 0,5min. 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 1.85 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 BS
28、ISO 4249-3:2010ISO 4249-3:2010(E) 4 ISO 2010 All rights reserved5.2 Rim diameters Nominal rim diameter code, specified diameters and circumferences shall be as given in Table 2. Table 2 Specified rim diameters and circumferences for cylindrical bead seat rims Dimensions in millimetres Specified rim
29、diameter Specified rim circumference D pD Nominal rim diameter codea +20,514 357,1 1 121,9 15 382,5 1 201,7 16 405,6 1 274,2 17 433,3 1 361,2 18 458,7 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
30、 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. The well contours of MT 2.50 and wider rims, however, are permitted to be between those shown in Figure 3 (basic contours) and Figure 4. = 0522 (see Table 3, fo
31、otnote d). NOTE For D and DH, see 6.3. Figure 3 5 tapered bead seat rim contours (MT type) BS ISO 4249-3:2010ISO 4249-3:2010(E) ISO 2010 All rights reserved 5Table 3 Dimensions of tapered bead seat rims Dimensions in millimetres A B C E aG H R1R2R3R4R5bR6R7Nominal rim width code tol. min. tol. tol.
32、min. min. max. 0,5 min. 0,5 0,5MT 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 12c0,50+MT 2.15 55 10,5+ 0,59 3dMT 2.50 63,5 13 MT 2.75 70 14 12 MT 3.00 76 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
33、 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 MT 10.00 254 MT 10.50 266,5 MT 11.00 279,5 MT 11.50 292 MT 12.00 305 MT 12.50 317,5 MT 13.00 330 MT 13.50 343 1,51+9 10,5 16 20+14 10,5+13 3 12,52,5 5,5 3 3 2,5 aE = hump location. See Figure 5 and Table 4 for rims without h
34、umps. bFor MT 2.50 and larger rims, the well contour may be a rounded shape with R = full radius. See Option 1, Figure 4. c For MT 1.85, is also permitted for better tyre mounting. 0,5010,5+d 5 0,5 of R4for MT 2.15 is also permitted. In that case, shall be 17 2,5. BS ISO 4249-3:2010ISO 4249-3:2010(E
35、) 6 ISO 2010 All rights reservedKey R full radius Figure 4 Well contour Option 1 6.2 Bead seat contours Bead seat contours for rims without hump shall be as shown in Figure 5 and as given in Table 4. Rims without hump shall only be used with tyres for tube-type applications. Figure 5 Bead seat conto
36、urs for rims without hump Table 4 Bead seat contours for rims without hump Dimensions in millimetres P Nominal rim width code 20+MT 1.50 4 MT 1.60 5 MT 1.85 8 MT 2.15 11 BS ISO 4249-3:2010ISO 4249-3:2010(E) ISO 2010 All rights reserved 76.3 Rim diameter and hump circumference The nominal rim diamete
37、r code, specified rim diameter and hump circumference shall be as given in Table 5. Annex A provides a procedure that may be used for determining the measuring rim diameter and the measuring rim circumference when an 8 mm ball tape is used for checking MT rims. Table 5 Specified rim diameters and hu
38、mp circumferences for MT rim contours Dimensions in millimetres Specified rim diametera D Hump circumference pDHNominal rim diameter code +2113 M/C 332,2 1 041,5 14 M/C 357,6 1 121,3 15 M/C 383 1 201,1 16 M/C 406 1 273,4b17 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
39、,1 21 M/C 535,4 1 679,9 23 M/C 586,2 1 839,5 24 M/C 611,6 1 919,3 NOTE The suffix M/C for nominal rim diameter codes 16 M/C and above is optional for rims manufactured before May 2003. aThe tolerance on the bead seat periphery is .1,50,5mm+bFor code 16 M/C, the tolerance on the bead seat periphery i
40、s 1 mm. 7 Permitted rim widths Permitted rim widths for the code-designated series of motorcycle tyres shall be in accordance with Table 6. NOTE For permitted rim widths for the metric series of motorcycle tyres, see ISO 5751-3. BS ISO 4249-3:2010ISO 4249-3:2010(E) 8 ISO 2010 All rights reservedTabl
41、e 6 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 2.75 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
42、.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 aMT contours may also apply. The measuring rim width for a given tyre section shall be obtained in accordance with ISO 4249-1:1985, Table 3. BS ISO 4249-3:2010ISO 4249-3:2010(E) ISO 2010 All rights reserved 9Annex A (informative
43、) Rim circumference measurement Tapered bead seat (MT type) rims The bead seat rim circumference 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 00,15mm.To ensure accuracy, each bead seat shall be measured
44、separately. When an 8 mm ball tape is used for checking tapered bead seat rims, the dimensions given in Figure A.1 and Table A.1 apply. Dimensions in millimetres aSpecified rim diameter. Figure A.1 Rim circumference measurement BS ISO 4249-3:2010ISO 4249-3:2010(E) 10 ISO 2010 All rights reservedTabl
45、e A.1 Rim circumference measurement Dimensions in millimetres Diameter DMCircumference pDMNominal rim diameter code 1,50,5+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 1 273,4a17 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 2
46、1 M/C 534,73 1 679,9 23 M/C 584,03 1 834,8 aFor code 16 M/C, the tolerance on the circumference is 1 mm. BS ISO 4249-3:2010ISO 4249-3:2010(E) ISO 2010 All rights reserved 11Bibliography 1 ISO 3911, Wheels and rims for pneumatic tyres Vocabulary, designation and marking 2 ISO 4000-2, Passenger car ty
47、res 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 4249-3:2010ISO 4249-3:2010(E) ICS 43.140 Price based on 11 pages ISO 2010 All rig
48、hts reserved This page deliberately left blankBSI is the independent national body responsible for preparing British Standardsand other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal
49、 Charter.British Standards Institution (BSI)raising standards worldwideBSI Group Headquarters389 Chiswick High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards are updated by amendment or revision. Users of British Stan-dards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to impr
