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Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITIS H STAN D AR D AUTO MO B ILE SE RIE S | | | | B S A U 50 : P art : | | | S e ctio n 0d : | | | | | | | | | | | Tyre s and whe e ls | | | | | | | | P art Tyre s | | | | | | S e ction 0d Ge ne ral | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IC S 43 40 ; 83 60 | | | | | | | | NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW | | | | | 998 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 50 : Part : Section 0d : 1998 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical C ommittee AUE /4, Wheels and tyres for motor vehicles, upon which the following bodies were represented: Agricultural E ngineers' Association Automobile Association British Industrial Truck Association British Pressure Gauge Manufacturers' Association British Rubber Manufacturers' Association Ltd C onfederation of Passenger Transport Department of Transport Freight Transport Association Institute of Road Transport E ngineers Motor C ycle Industry Association Ltd Motor Industry Research Association National Tyre Distributors' Association Retread Manufacturers' Association Road Haulage Association Ltd Society of Motor Manufacturers and Traders Ltd This B ritis h Standard, having Amendments issued since publication b e e n p re p are d unde r the dire ctio n o f the E ngine e ring Se cto r B o ard, was p ub lishe d unde r the autho rity o f the Standards B o ard and co me s into e ffe c t o n Ap ril 9 © B SI 9 The fo llo wing B SI re fe re nce s re late to the wo rk o n this Standard: C o mmitte e re fe re nce AVE /4 D raft fo r c o mme nt 7/705 74 D C ISBN 580 28604 Amd No Date Text affected Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 50 : Part : Section 0d : 1998 Contents Page Committees responsible Foreword ii Scope Normative references Definitions Tyre measurement Rim identification Inflation pressures Anti-static properties Tyre markings Bibliography Figure Typical © BSI 998 Inside front cover tyre section i Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI B S A U 50 : Part : S e ction 0d : 998 F o re wo rd This section of BS AU 50 : Part has been prepared by Technical Committee AUE /4 It supersedes BS AU 50 : Part : Section 0c : 977 which is withdrawn This section provides information for use in conj unction with other sections in Part The other sections are: Section : Car tyres Section : Co mmercial vehicle tyres Section 3: Off- the- ro ad tyres Section 4: Agricultural tracto r and machine tyres Section 5: Industrial vehicle tyres Section 6: Mo to r cycle tyres Section 7: Mo ped tyres Section 8: Co de o f practice fo r the sto rage o f tyres, inner tub es and flaps This new edition incorporates amendment to BS AU 50 : Part : Section 0b : 973 and updates the references, definitions and marking requirements It does not, however, constitute a full revision of the standard Part of this standard is concerned with tyres The other parts are: Part : Wheels and rims Part 3: Valves Part 4: Rim pro files and dimensio ns Certain components specified in this standard may be subj ect to patents Manufacturers complying with this standard should be satisfied that they are not infringing any patents N O TE Info rmatio n o n SI units is p ro vide d in B S 555 and B S 50 C o mp lianc e wi t h a B ritis h S tandard doe s not o f its e lf c o nfe r im m un it y fro m le gal o b ligatio ns S um m ary o f p age s This document comprises a front cover, an inside front cover, pages i and ii, pages to and a back cover ii © B SI 9 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI B S A U : P art : S e ction 0d : 998 mo to r c yc le /m o p e d tyre S cop e Part o f this with lo ads with the B ritis h and ass o c iate d B S AU -4, and Re quire me nts Ap p ro p riate Standard inflatio n whe e l on the rim numb e rs tyre fo r use s p e c ifie d o f ve hic le s are als o are sp e c ifie d Pne umatic siz e s , sc he dule s , c o nto urs c las s e s fo r markings valve sp e c ifie s p re s s ure in s p e c ifie d inc lude d c ycle s N O TE us e tyre , p rimarily de s igne d fo r us e on mo to r and/o r mo p e ds Ve hic le s with this with thre e typ e o r fo ur whe e ls may b e de signe d fo r o f tyre e arthm o ve r tyre in Pne umatic tyre , p rimarily de s igne d fo r us e on B S AU -3 e arth-mo ving N O TE b asis Tyre o f the data in typ e this o f tyre , caravans using N O TE Sp e e d limits B ritis h no t c ar tyre s , its S tandard are ap p lic atio n re fe re nc e s ho uld c o mp ile d on Fo r e xamp le , be made to the industrial tyre fo r Se ctio n S o lid, to the markings quo te d ac co unt any le gal s p e e d N O TE o ne Tyre s de sign to have in this and cap ab ilitie s o f o ne suit limits s ize vario us B ritis h o f the ap p lic ab le de s ignatio n s e rvice diffe re nt sp e e d c ap ab ilitie s , S tandard tyre s to may and the be indic ate d are no t in The s e on the cushio n/re s ilie nt into de signe d mo re than de s igns tyre re fe re nc e s c o nstitute which, re fe re nc e s , re vis io ns o f, Fo r undate d p ub licatio n s ide wall re fe re nc e s , re fe rre d B S 5 8: 80 B S AU -3 B S AU -4 se c tio n co ntain in to p ub lic atio ns the this late s t e ditio n to , no t Fo r Pne umatic fo llo wing in or p atte rn Tre ad p atte rn Tre ad B ritish ap p ly, S tandard, mate rials , p rimarily de s igne d fo r use on made -up de s igne d fo r us e o ff-the -ro ad p atte rn de s igne d fo r us e on and o ff-the -ro ad 3.1 s e rvic e de s c rip tio n D e finitio n inde x N O TE rating o f a tyre ' s (o r indic e s ) S o me (PR) tyre s c ap ab ilitie s , and sp e e d may indic ate o r s tar rating (o ne b y me ans o f a lo ad symb o l lo ad c arrying o r mo re stars ) c ap ac ity b y p ly Se e , fo r e xamp le , B S AU 50 -1 -3 3.1 wid e tyre Tyre usually fitte d single to re p lac e twin as s e mb lie s , in fo rmatio n to ge the r with tho se Tyre me asure me nts with the shall be made in ac c o rdanc e give n re le vant se ctio ns o f Part o f this standard figure ) shall s hap e d mo untab le on the p ne um atic tyre e lastic fo r us e mac hine s 3.1 c ro s s - c o untry tre ad p atte rn Whe re fab ric ; and Tyre m e as ure m e nt als o Annular to ro idal p rimarily de s igne d ve hic le s 3.1 dual p urp o s e tre ad p atte rn o f the ap p lie s o f this de finitio ns B S 5 (s e e and on inflatab le re info rc e d a rim and e nve lo p e , with wire of and/o r co ns truc te d to the no be p ro c e dure o b taine d inflate d and tyre , dividing if sp e c ifie d, b y me as uring mo unte d on the the the o ve rall diame te r c ircumfe re nc e ap p ro p riate of rim, b y 41 re tain air R im ide ntific atio n c ar tyre Pne umatic cars tyre , ap p ly Specification for electrical resistance of conducting and antistatic products made from flexible polymeric material Glossary of rubber terms Tyres and wheels Ð Part 3: Valves Tyres and wheels Ð Part 4: Rim profiles and dimensions p urp o se s and te xt, D e finitio ns Fo r the p rimarily ro ads o f B S AU s ub s e que nt ame ndme nts any o f the s e B S 0: 78 re fe re nc e o f this tyre , transp o rt h i g h way tre ad p atte rn c ume nts thro ugh p ro vis io ns wo rks agric ultural tyre Tre ad no rmative inte rnal e quip me nt agric ultural fo llo wing on may No rmative re fe re nc e s date d fo r us e indus trial marking The o r p ne umatic re le vant take ve hic le made ap p lic atio ns as ve hic le s tyre , Rim p rimarily de s igne d fo r us e on fo r us e on mo to r de tails ide ntifie d in as the tab le s s ho wn in in Part o f this s tandard are B S AU -4 o r the ir de rivative s 3 c o m m e rc ial ve hic le tyre Pne umatic tyre , p rimarily de s igne d Inflatio n p re ss ure s The ve hic le s that c arry go o ds inflatio n p re s s ure s s p e cifie d in the tab le s in and/o r fare -p aying Part o f this s tandard ap p ly to tyre s at amb ie nt p as se nge rs c yc le tyre Pne umatic with © BSI two 998 tyre , p rimarily de s igne d o r thre e fo r us e on c o nditio ns and due ve hic le to the no t inc lude any p re s s ure b uild-up o p e ratio n cyc le s whe e ls Anti- s tatic p ro p e rtie s Tyres required to have anti-static properties shall conform to the appropriate requirements of BS 050 Tyre m arkings Tyre sidewall markings shall be permanent and legible NOTE It is preferab le that tyre markings are on both sidewalls NOTE Markings sp ecified in BS AU 50 are internationally agreed Additional markings may b e required to satisfy requirements for UK and other markets NOTE Tub es should be permanently and legibly marked with Section width Overall width Overall diameter Nominal mm diameter Section height their suitab le range of tyre size S i d e wa l l Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI B S A U : P art : S e ction 0d : 998 F igure Typ ic al tyre se ctio n © BSI 998 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 50 : Part : Section 0d : 1998 Bibliography BSI publications B RITIS H STAN D ARD S IN STITUTIO N , LO N D O N Co nversio n facto rs and tab les BS 350 Specificatio n fo r SI units and reco mmendatio ns fo r the use o f their BS 5555 multiples and o f certain o ther units BS AU : S ub se c tio n © BSI 998 Part a : : S e c tio n 991 : Tyres and wheels Ð Tyres Ð Off-the-ro ad tyres Ð Specificatio n fo r narro w and wide b ase tyre lo ads and inflatio n pressures Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 1 : 20 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI | | | | | | | | | BSI Ð British Standards Institution | | | | | | | BSI is the independent national body responsible for preparing British Standards It | | | | | | | presents the UK view on standards in E urope and at the international level It is incorporated by Royal Charter Revisions | | | | British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions | | | It is the constant aim of BSI to 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