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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-1.2.1b:2001 ISO 4209-1:2001 Incorporating Corrigendum No. 1 Truck and bus tyres and rims (metric series) Part 1: Tyres ICS 83.160.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: London South Bank University, London
2、South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.2.1b:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy C
3、ommittee on 21 September 2001 BSI 08 October 2001 ISBN 0 580 38504 3 National foreword This British Standard reproduces verbatim ISO 4209-1:2001 and implements it as the UK national standard. It supersedes BS AU 50-1.2.1a:1995 which is withdrawn. The UK participation in its preparation was entrusted
4、 to Technical Committee AUE/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 or European publications referr
5、ed to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a co
6、ntract. Users of British Standards are responsible for their 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 inter
7、pretation, or proposals for change, and keep the UK interests 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 19 and a back co
8、ver. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 13512 Corrigendum No. 1 08 October 2001Corrected ISBN inserted Licensed Copy: London South Bank University, London South Bank University, Sat
9、Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 4209-1:2001(E) OSI 1002 INTERNATIONAL STANDARD ISO 4209-1 Sixth edition 2001-09-01 Truck and bus tyres and rims (metric series) Part 1: Tyres Pneumatiques et jantes (sries millimtriques) pour camions et autobus Partie 1:
10、 Pneumatiques Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4209-1:2001(E) DPF dlcsiremia ihTs PDF file mya ctnoain emdeddeb tyfepcaes. In acccnadroe with Aebods licnesign lopic,y this file may be pirntde
11、 ro ivwede tub slahl ton eb ideted lnuess teh tyfepacse which aer emdeddeb era licnesed to dna intslaled on teh computre freporming teh idetign. In wodlnidaogn this f,eli trapies accept tniereh teh sersnoptilibiy of ton nifrgnigni Asebod licsnegni ilopcy. ehT ISO tneClar Secteraairt accepts no lilib
12、aity ni this .aera Aebod is a tedarmakr fo Aebod Stsyems Icntaropro.de teDails fo the sfotwera pcudorts sude to crtaee tihs PFD file can be fdnuo in the Glarene Info leratiev to the fil;e the Pc-FDaertion arapmteres were tpoimizde for pirtning. Evyre cera sah neeb taken to enseru taht teh file is su
13、itlbae fro sue by ISO memreb idob.se In teh lnuikley etnev ttah a plborem leratign to it is f,dnuo lpsaee ifnrom teh tneClar Sceterairat at the sserdda givne lebwo. ISO 1002 All rhgits rsevre.de elnUss towrehise scepfidei, on trap of tihs cilbuptanoi mya eb cudorperde ro utzilide ni yna form ro yb y
14、na snaem, eelctinorc ro mecinahcal, inclidugn tohpociypong dna micrfoilm, wittuoh repmissino in writing form eitreh ISO at teh erddass lebwo ro ISOs memreb ydob in the ctnuoyr of the rtseuqee.r ISO cirypothg fofice saCe tsopale 65 ? 1121-HC aveneG 20 leT. + 41 22 947 10 11 xaF + 14 22 947 90 74 E-ma
15、il cirypothgiso.ch eWb www.iso.ch ii ISO 1002 All irhgts seredevr Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4209-1:2001(E) ISO 1002 All rights rsedevreiii ContentsPage Forewordv 1Scope 1 2Normative re
16、ference1 3Terms and definitions .1 4Tyre designation1 4.1Content .1 4.2Size and construction .2 4.2.1Marking.2 4.2.2Nominal section width.2 4.2.3Nominal aspect ratio .2 4.2.4Tyre construction code.2 4.2.5Nominal rim diameter2 4.3Service condition characteristics 2 4.3.1Marking.2 4.3.2Load index3 4.3
17、.3Speed symbol.3 4.4Other service characteristics .3 4.5Example3 5Tyre dimensions 4 5.1Calculation of “design“ tyre dimensions 4 5.1.1Coefficients 4 5.1.2Theoretical rim width, Rth4 5.1.3Measuring rim width, Rm.4 5.1.4Design tyre section width, S .4 5.1.5Design tyre section height, H.4 5.1.6Design t
18、yre overall diameter, Do4 5.1.7Values .5 5.2Calculation of “maximum overall tyre dimensions in service“.5 5.2.1Maximum overall width in service, Wmax.5 5.2.2Maximum overall diameter in service, Do,max.5 5.3Minimum dual spacing (MDS).5 5.4Approved rim widths.7 6Tyre dimension tables.8 7Method of meas
19、urement of tyre dimensions8 8Service characteristics8 8.1Tyre load-carrying capacity8 8.2Speed symbol.8 8.3Load-carrying capacity at various speeds9 Annex A (informative) Guideline values for metric series, 5 rims12 Annex B (informative) Guideline values for metric series, 15 rims15 Annex C (informa
20、tive) Tyre dimension tables19 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4209-1:2001(E) iv ISO 1002 All rights rsedevre Foreword ISO (the International Organization for Standardization) is a worldwide
21、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 represented on that c
22、ommittee. 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 are drafted in acco
23、rdance with the rules given in the ISO/IEC Directives, Part 3. 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
24、is drawn to the possibility that some of the elements of this part of ISO 4209 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 4209-1 was prepared by Technical Committee ISO/TC 31, Tyres, rims and valves
25、, Subcommittee SC 4, Truck and bus tyres and rims. This sixth edition cancels and replaces the fifth edition (ISO 4209-1:1993), which has been technically revised. ISO 4209 consists of the following parts, under the general title Truck and bus tyres and rims (metric series): Part 1: Tyres Part 2: Ri
26、ms Annexes A, B and C of this part of ISO 4209 are for information only. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO 4209-1:2001(E) ISO 1002 All rights rsedevre1 Truck and bus tyre
27、s and rims (metric series) Part 1: Tyres 1Scope This part of ISO 4209 specifies the designation, dimensions and load ratings of the metric series of tyres primarily intended for trucks and buses. It is applicable to bias-belted, diagonal and radial tyres for trucks and buses, mounted on 5 tapered ri
28、ms and on 15 tapered (drop-centre) rims. It is also applicable to different concepts and types of tyres and rims; in these cases, however, appropriate rim/section ratios K1, K4, coefficients K2, K3, CRand construction codes have been added to Tables 3, 4 and 5. ISO 4209-2 deals with requirements for
29、 rims. 2Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this part of ISO 4209. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreeme
30、nts based on this part of ISO 4209 are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of curre
31、ntly valid International Standards. ISO 4223-1:1?, Definitions of some terms used in the tyre industry Part 1: Pneumatic tyres. 3Terms and definitions For the purposes of this part of ISO 4209, the terms and definitions given in ISO 4223-1 apply. 4Tyre designation 4.1Content The designation of the t
32、yre shall be shown on its sidewall and shall include the following markings, to be shown close to each other: ?size and construction (see 4.2); ?service condition characteristics (see 4.3). 1?To be published. (Revision of ISO 4223-1:1989) Licensed Copy: London South Bank University, London South Ban
33、k University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4209-1:2001(E) 2 ISO 1002 All rights rsedevre 4.2Size and construction 4.2.1Marking The size and construction characteristics shall be indicated as follows: 4.2.2Nominal section width The nominal section width shall be
34、expressed in millimetres. For tyres fitted to 5 taper rims and for tyres fitted to 15 taper rims, the nominal tyre section width shall end in 5. 4.2.3Nominal aspect ratio The nominal aspect ratio shall be expressed as a percentage and shall be a multiple of 5. 4.2.4Tyre construction code The tyre co
35、nstruction code shall be as follows: B for bias-belted construction; D, or , for diagonal/bias construction; R for radial construction. NOTEOther codes will be established for new tyre concepts (constructions). 4.2.5Nominal rim diameter The nominal rim diameter for 5 tapered bead seat rims and for 1
36、5 tapered bead seat (drop-centre) rims shall be expressed by a code (see Table 1 for code correlation). NOTE15 tapered rims are to be used only for tyres with load index 122 and larger. However, it shall be expressed in millimetres for new and future concepts where the mounting of existing tyres on
37、new concept rims or of new concept tyres on existing rims would be incompatible. 4.3Service condition characteristics 4.3.1Marking The characteristics shall be indicated as follows: Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontr
38、olled Copy, (c) BSI ISO 4209-1:2001(E) ISO 1002 All rights rsedevre3 4.3.2Load index The load index is a numerical code associated with the maximum load a tyre can carry at the speed indicated by its speed symbol under the service conditions specified by the tyre manufacturer. See Table 6. 4.3.3Spee
39、d symbol The speed symbol indicates the speed at which the tyre can carry the load corresponding to its load index under the service conditions specified by the tyre manufacturer. See Table 7. 4.4Other service characteristics 4.4.1In the case of tubeless tyres, the marking “TUBELESS” shall be shown
40、on the tyre. 4.4.2In the case of a preferred direction of rotation of the tyre, an arrow shall be used to indicate that direction. 4.4.3In the case of special tread tyres (see Table 3), the symbol “ET” shall be shown on the tyre. 4.5Example A tyre having a)a size and construction of: ?nominal sectio
41、n width 275 mm, ?nominal aspect ratio 70 %, ?radial construction, ?nominal rim diameter code 22.5; b)service condition characteristics of: ?single load 2 500 kg, ?dual load 2 300 kg, ?reference speed 130 km/h; c)other service characteristics: ?tubeless, ?special tread; shall be marked: Licensed Copy
42、: London South Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4209-1:2001(E) 4 5Tyre dimensions 5.1Calculation of “design“ tyre dimensions 5.1.1Coefficients For the choice of coefficients K1(theoretical rim/section ratio), K2and K4(m
43、easuring rim/section ratio), see Tables 3 and 4. 5.1.2Theoretical rim width, Rth The theoretical rim width, Rth, is equal to the product of the nominal section width, SN, and the theoretical rim/section ratio, K1: Rth= K1SN 5.1.3Measuring rim width, Rm The measuring rim width, Rm, is equal to the pr
44、oduct of the nominal section width, SN, and the coefficient, K4: Rm= K4SN rounded to the nearest standardized rim width (see Table 2). 5.1.4Design tyre section width, S The design tyre section width, S, is the nominal section width, SN, transferred from the theoretical rim, Rthto the measuring rim,
45、Rm: S = SN+ K2(Rm Rth) rounded to the nearest whole number. 5.1.5Design tyre section height, H The design tyre section height, H, is equal to the product of the nominal section width, SN, and the nominal aspect ratio, H/S (H/S expressed as a percentage): N / 100 H S HS? rounded to the nearest whole
46、number. 5.1.6Design tyre overall diameter,Do The design tyre overall diameter, Do, is the sum of the nominal rim diameter, Dr, plus twice the design tyre section height, H: Do= Dr+ 2H For tyres using a nominal rim diameter code, see Table 1 for the value of Drto be used. Licensed Copy: London South
47、Bank University, London South Bank University, Sat Dec 09 02:13:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4209-1:2001(E) ISO 1002 All rights rsedevre5 5.1.7Values The relevant dimensions (measuring rim width, design section width and design section height) are shown in annexes A and B. For t
48、yres of a given series, with a nominal tyre section over 205, it is recommended that they be in increments larger than 10. 5.2Calculation of “maximum overall tyre dimensions in service“ These calculations are for use by vehicle manufacturers in designing for tyre clearances. 5.2.1Maximum overall wid
49、th in service, Wmax The maximum overall width in service, Wmax, is equal to the product of the design tyre section width, S, and the appropriate coefficient, a (see Table 3): Wmax= Sa It includes protective ribs, lettering, embellishments, manufacturing tolerances and growth due to service. 5.2.2Maximum overall diameter in service, Do,max The maximum overall diameter in service, Do,max, is equal to the nominal rim diameter, Dr(see Table 1), plus twice the product of the design tyre section height, H, and the appropriate coefficient