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 BS 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-1 2.1 b:2001 ISO 4209-1 :2001 Incorp o rating Corrigendum No Truck and bus tyres and rims (metric series) — Part : Tyres I C S 83 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 50-1 2.1 b:2001 National foreword This B ritis h S tandard rep roduces verb atim IS O 09 - : 00 and implements it as the UK national s tandard It s up ersedes BS AU - a: 95 which is withdrawn The UK p articip ation in its p rep aration was entrus ted to Technical C o mmittee AUE /4 , Tyres and wheels for motor vehicles , which has the resp onsib ility to: — — aid enquirers to unders tand the text; p res ent to the res pons ib le international/E urop ean comm ittee any enquiries on the interp retation, or p rop osals for change, and keep the UK interests informe d; — monitor re lated international and E urop ean develop ments and p rom ulgate them in the UK A list of organiz ations rep resented on this committee can b e ob tained on reques t to its s ecretary C ross-references The Britis h S tandards which imp lem ent international or E urop ean p ub lications refe rred to in this document may b e found in the BS I S tandards C atalogue under the s ection entitled “International S tandards C orresp ondence Index”, or b y using the “Find” facility of the BS I S tandards E lectronic C atalogue A Britis h Standard does not p urport to include all the necess ary p rovisions of a contract Us ers of British S tandards are resp onsib le for their correct ap p lication Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comp ris es a front cover, an ins ide front cover, the ISO title p age p ages ii to iv, p ages to and a b ack cover This Britis h S tandard, having b ee n p rep ared under the direc tion of the E nginee ring The BS I cop yright date disp layed in this document indicates when the document was last is sued S ector P olicy and S trategy C o mmittee, was p ub lis he d under the authority of the S tandards Polic y and S trategy C o mmittee on S ep tem b er 01 Amendments issued since publication © BS I O cto b er 001 ISBN 80 385 Amd No D ate C omments 351 08 O ctob er 001 C orrected IS BN inserted C orrigendum No 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I N TE RN ATI ON AL STAN D ARD I SO 4209-1 Si xth ed i ti on 2001 -09-01 Tru ck an d bu s tyres an d ri m s (m etri c seri es) — Part : Tyres Pneumatiques et jantes (séries millimétriques) pour camions et autobus — Partie 1: Pneumatiques Reference nu m ber I SO 4209-1 :2001 (E) © OSI 002 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) DPF d l csirem i a i h Ts eb PDF i d e te d f, e l i fi l e m ya l n u es s trap i es c tn o n te h ac c e pt em d e d d e b tyfe p ac s e tn i e re h te h wh i c h t yfe p caes ae r In acc cn ad ro e em d e d d e b s e rs n o pti l i b i y of to n e wi th l i c n es e d n i frg n i g n i to A' e bo d s dna As ' e b o d l i c n es i g n i n ts l al e d l i csn eg n i on l o pi c, y te h i l o pc y th i s c om pu tre eh T I SO fi l e m ay be fre p o rm i n g tn e C l ar pi rn t d e te h ro i vwed e i d e ti g n In tu b s l ah l to n wo d l n i d ao g n th i s no th i s S ec te raai rt ac c e pts l i l i bai t y th e P c- F D ae rt i o n ni ae Ae bo d is te D l s we re t tah © Al l ro in fo te d arm akr th e a p l bo rem I SO fo r Ae bo d pcu d o rts pi rtn i n g l e rati g n to it S ts yem s su d e E vyre is to c e f, d n u o I cn taro pro d e c rtae e s ah l p s ae e ti h s n eeb P FD t ake n i fn rom te h fi l e to c an be e n s e ru fd n u o tah t teh tn e C l ar S ce te rai rat in th e fi l e at is th e G l are n e s u i tl bae s s e rd d a I n fo fro l e rati e v su e g i e by to I SO fi l ; e th e m em re b i d ob se In te h arapm te res l n u i kl e y e tn e v l e b wo 002 rh g i ts rs e vre d e m e c i n ah c al , th e fo s fo t we tpo i m i z d e c tn u o yr I SO el n U ss i n cl i d u g n of th e c i ryp o th g s aC e ts o p al e s ce pfi d e i , dna on trap m i c rfo i l m , of ti h s wi t tu o h ci l bu p tan o i m ya re pm i s s i n o in eb cu d o rp e rd e wri ti n g fo rm ro ei tre h u tz i l i d e I SO at ni te h yn a fo rm e rd d as s ro yb l e b wo yn a ro s n ae m , I S O' s e e l c t i n o rc m em re b yd o b rts e u q e e r fo fi c e 65 · 1 21 -H C + 41 22 47 1 xaF + 22 947 90 74 e Wb to wre h i s e to h p oc i yp o n g l e T E - m l ii a ave n e G 20 c i rypo th g i @ s o c h www i s o c h © I SO 002 – Al l i rh g t s s e re d e vr 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI ISO 4209-1 :2001 (E) Contents Pag e Foreword v Scope Normative reference Terms and definitions 4.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.3 4.3.1 4.3.2 4.3.3 4.4 4.5 Tyre designation Content Size and construction Marking Nominal section width Nominal aspect ratio Tyre construction code Nominal rim diameter Service condition characteristics Marking Load index Speed symbol Other service ch aracteristics Example 5.1 5.1 5.1 Tyre dimensions Calculation of "design" tyre dimensions Coefficients Theoretical rim width, th 5.1 Measuring rim width, 5.1 5.1 5.1 Design tyre section width, Design tyre section height, Design tyre overall diameter, o 5.1 5.2 5.2.1 Values Calculation of "maximum overall tyre dimensions in service" Maximum overall width in service, m ax R R m S H D W D 5.2.2 Maximum overall diameter in service, 5.3 5.4 Minimum dual spacing (MDS) Approved rim widths Tyre dimension tables Method of measurement of tyre dimensions 8 8.1 8.2 8.3 Service characteristics Tyre load-carrying capacity Speed symbol Load-carrying capacity at various speeds o, m ax Annex A (i n form ati ve) Guideline valu es for metric series, ° rims Annex B (i n form ati ve) Guideline valu es for metric series, ° rims Annex C (i n form ati ve) Tyre dimension tables © I SO 002 – Al l ri g hts rsedevre iii 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Foreword 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 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 collaborates 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 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 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, Subcommittee SC 4, Truck and bus tyres and rims This sixth edition cancels and replaces the fifth edition (ISO 4209-1 :1 993), 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: Rims Annexes A, B and C of this part of ISO 4209 are for information only iv © ISO 002 – All rights rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I NTERN ATI ON AL STAN DARD I SO 4209-1 : 2001 (E) Tru ck an d bu s tyres an d ri m s (m etri c seri es) — Part : Tyres Scope Th i s part of I SO 4209 speci fi es th e d esi g n ati on , d i m en si on s an d l oad rati n g s of th e m etri c seri es of tyres pri m ari l y i n ten d ed for tru cks an d bu ses I t i s appl i cabl e to bi as-bel ted , d i ag on al an d rad i al tyres for tru cks an d bu ses, m ou n ted on 15 ° tapered ° tapered ri m s an d on h owever, appropri ate (drop-cen tre) ri m s I t i s al so appl i cabl e to d i fferen t cepts an d types of tyres an d ri m s; ri m /secti on rati os in th ese cases, K , K , coeffi ci en ts K , K , CR an d stru cti on cod es h ave been ad d ed to Tabl es 3, an d I SO 4209-2 d eal s wi th req u i rem en ts for ri m s Norm ati ve referen ce Th e fol l owi n g n orm ati ve docu m en t tai n s provi si on s wh i ch , th rou g h referen ce i n th i s text, sti tu te provi si on s of th i s part of I SO 4209 For d ated referen ces, su bseq u en t am en d m en ts to, or revi si on s of, an y of th ese pu bl i cati on s n ot appl y H owever, parti es to ag reem en ts based on th i s part of I SO 420 are en cou rag ed to i n vesti g ate th e possi bi l i ty of appl yi n g th e m ost recen t edi ti on of th e n orm ati ve d ocu m en t i n d i cated bel ow For u n d ated referen ces, th e l atest ed i ti on of th e n orm ati ve d ocu m en t referred to appl i es M em bers of I SO an d I EC m n tai n reg i sters of cu rren tl y val i d I n tern ati on al Stan d ards I SO 4223-1 : —1 , Definitions of some terms used in the tyre industry — Part : Pneumatic tyres Term s an d defi n i ti on s For th e pu rposes of th i s part of I SO 4209, th e term s an d defi n i ti on s g i ven i n I SO 4223-1 appl y 4 Tyre d esi g n ati on Con ten t Th e d esi g n ati on of th e tyre sh al l be sh own on i ts si d ewal l an d sh al l i n cl u d e th e fol l owi n g m arki n g s, to be sh own cl ose to each oth er: ¾ ¾ 1 si ze an d stru cti on (see 2) ; servi ce di ti on ch aracteri sti cs (see 3) To be pu bl i sh ed (Revi si on of I SO 4223-1 : 989) © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Si ze an d stru cti on 2.1 M arki n g Th e si ze an d stru cti on ch aracteri sti cs sh al l be i n d i cated as fol l ows: 2 N om i n al secti on wi d th Th e n om i n al secti on wi dth sh al l be expressed i n m i l l i m etres For tyres fi tted to 2.3 ° taper ri m s an d for tyres fi tted to ° taper ri m s, th e n om i n al tyre secti on wi dth sh al l en d i n N om i n al aspect rati o Th e n om i n al aspect rati o sh al l be expressed as a percen tag e an d sh al l be a m u l ti pl e of 4 Tyre stru cti on cod e Th e tyre stru cti on cod e sh al l be as fol l ows: B for bi as-bel ted stru cti on ; D, R N OTE or –, for d i ag on al /bi as stru cti on ; for rad i al stru cti on Oth er cod es wi l l be establ i sh ed for n ew tyre concepts (con stru cti on s) N om i n al ri m d i am eter Th e n om i n al ri m d i am eter for ° tapered bead seat ri m s an d for ° tapered bead seat (d rop-cen tre) ri m s sh al l be expressed by a cod e (see Tabl e for cod e correl ati on ) N OTE 15 ° tapered ri m s are to be u sed onl y for tyres wi th l oad i n d ex 22 an d l arger H owever, i t sh al l be expressed i n m i l l i m etres for n ew an d fu tu re cepts wh ere th e m ou n ti n g of exi sti n g tyres on n ew cept ri m s or of n ew cept tyres on exi sti n g ri m s wou l d be i n com pati bl e 4 3.1 Servi ce d i ti on ch aracteri sti cs M arki n g Th e ch aracteri sti cs sh al l be i n d i cated as fol l ows: © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Load i n d ex 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 3 Speed sym bol 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 4 4 4 4 Oth er servi ce ch aracteri sti cs In the case of tubeless tyres, the marking TUBELESS shall be shown on the tyre In the case of a preferred direction of rotation of the tyre, an arrow shall be used to indicate that direction In the case of special tread tyres (see Table 3), the symbol ET shall be shown on the tyre “ ” “ ” Exam pl e A tyre having a) a size and construction of: ¾ nominal section width 275 mm, ¾ nominal aspect ratio 70 %, ¾ radial construction, ¾ nominal rim diameter code 22.5; b) service condition characteristics of: ¾ single load 500 kg, ¾ dual load 300 kg, ¾ reference speed 30 km/h; c) other service characteristics: ¾ tubeless, ¾ special tread; shall be marked: © ISO 002 All rights rsedevre – 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI ISO 4209-1 :2001 (E) Tyre dimensions 5.1 Calculation of "design" tyre dimensions 5.1 Coefficients For th e ch oi ce of coeffi ci en ts K1 (th eoreti cal ri m /secti on K2 rati o) , an d K4 (m easu ri n g ri m /secti on rati o) , see Tabl es an d 5.1 Th e Theoretical rim width, R th th eoreti cal ri m ri m /secti on rati o, R th 5.1 = wi d th , R th , is equ al to th e prod u ct of th e n om i n al secti on wi d th , SN , an d th e th eoreti cal K1 : K1 SN Measuring rim width, R m Th e m easu ri n g ri m wi d th , Rm = Rm , an d th e coeffi ci en t, K4 : tran sferred from th e th eoreti cal ri m , R th i s eq u al to th e prod u ct of th e n om i n al secti on wi d th , SN , K4 SN rou n d ed to th e n earest stan d ard i zed ri m wi dth (see Tabl e 2) 5.1 Design tyre section width, S Th e d esi g n tyre secti on wi d th , m easu ri n g ri m , S = SN + S, i s th e n om i n al secti on wi dth , SN , to th e Rm : K2 ( R m – R th ) rou n d ed to th e n earest wh ol e n u m ber 5.1 Design tyre section height, H Th e d esi g n tyre secti on h ei g h t, rati o, H/S ( H/S H = SN H, i s eq u al to th e prod u ct of th e n om i n al secti on wi d th , SN , an d th e n om i n al aspect expressed as a percen tag e) : H/ S 00 rou n d ed to th e n earest wh ol e n u m ber 5.1 Design tyre overall diameter, D o Th e d esi g n tyre overal l di am eter, h ei g h t, Do Do , i s th e su m of th e n om i n al ri m d i am eter, = Dr pl u s twi ce th e d esi g n tyre secti on + 2H For tyres u si ng a n om i n al ri m d i am eter code, see Tabl e for th e val u e of D r, H: Dr to be u sed 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Tabl e — N om i n al ri m d i am eter cod es Cod e Tabl e N om i n al rim — Ri m wi d th cod es Cod e Ri m wi d th d i am eter ° tapered ri m s 15 ° tapered ri m s D r (d rop-cen tre) ° tapered ri m s mm 15 ° tapered mm (d rop-cen tre) ri m s 10 — 254 00 — 76 12 — 305 50 — 89 13 — 330 00 — 01 , 14 — 356 50 — 1 4, 15 — 381 00 — 27 16 — 406 — 25 33, 17 — 432 50 — 39, — 445 00 00 52, 18 — 457 50 — 65 — 495 — 75 71 , 20 — 508 00 — 78 — 20 521 50 50 90, 22 — 559 00 — 203 — 22 572 — 25 209, 24 — 61 50 — 21 — 24 622 00 00 228, 50 — 241 , — 75 247, 00 — 254 50 50 266, 1 00 — 279 — 1 75 298, 00 — 305 — 25 31 1 00 00 330 00 00 355, 5 00 00 381 — 00 406, — 00 432 — 00 457 © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) — Tabl e Coeffi ci en ts Stru ctu re K2 , b , a for cal cu l ati on of tyre d i m en si on s Tyre stru cti on Coeffi ci en ts cod e K2 b a a Bi as-bel ted B 0, , 07 , 08 Di ag onal D 0, , 07 , 08 Rad i al R 0, , 04 , 05 a For speci al tread tyres (see 4 3): Bi as-belted: Di ag on al : Radi al : N OTE b b b = , 09 = , 09 = , 06 Oth er factors m ay be establ ish ed for n ew tyre cepts (constructi on s) Tabl e — Coeffi ci en ts K1 , K3 , K4 for cal cu l ati on of tyre d i m en si on s Nom i n al Th eoreti cal Mi n i mu m M easu ri n g stru ction aspect ri m /section d u al ri m /section cod e rati o rati o spaci ng rati o H/S K1 K3 K4 00 to 75 0, 70 ,1 0, 70 70 and 65 0, 70 ,1 0, 75 60 0, 70 ,1 0, 75 55 0, 70 ,1 0, 80 0, 70 ,1 0, 80 90 to 65 0, 75 , 25 0, 75 60 0, 80 , 25 0, 80 55 0, 80 , 25 0, 80 50 0, 80 — 0, 80 0, 85 — 0, 85 Tyre Type of ri m ° tapered B, D, R 50 15 ° tapered (d rop-cen tre) 45 a a a For H /S l ower th an 50 or 45 respecti vel y, fu rth er coeffi ci en ts wi l l be establi sh ed N OTE NOTE Oth er factors m ay be establ ish ed for n ew tyre cepts (constructi on s) Approved ri m wi d th s Th e ran g e of approved ri m wi d th s, i n m i l l i m etres, i s d eterm i n ed, for each n om i n al secti on wi d th , by m u l ti pl yi n g th e n om i n al secti on wi dth , ¾ ¾ SN , m i n im u m rim wi d th : m axim u m rim wi d th : by th e coeffi ci en ts, CR , CR , ´ ´ m ax CR , presen ted i n Tabl e 5, i e SN ; SN Th e val u es obtai n ed sh al l be rou n d ed to th e n earest stan dard i zed ri m wi d th i n Tabl e © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Tabl e Type of ri m — Coeffi ci en ts for cal cu l ati on of ri m wi d th s Nom i n al aspect rati o Coeffi ci en ts for cal cu lati on of approved ri m wi d th H/S m ax 00 to 75 0, 65 0, 80 70 0, 675 0, 80 65 0, 70 0, 80 60 0, 725 0, 825 55 0, 75 0, 825 50 b 0, 75 0, 825 90 to 70 0, 70 0, 80 60 an d 65 0, 75 0, 825 55 0, 775 0, 825 50 0, 80 0, 85 0, 80 0, 85 ° tapered 45 a CR ° tapered 15 a b Oth er coeffici ents m ay be speci fi ed i n rel ati on to speci al servi ces by ag reem en t am ong tyre, rim , wh eel an d m otor veh i cl e m an u factu rers b For H/S l ower th an 50 an d 45 respecti vel y, fu rth er coeffi ci en ts wi l l be establ ish ed Tyre d i m en si on tables Exam pl es of a few si zes i n a tyre d i m en si on s tabl e are g i ven i n An n ex C Th e fi g u res sh own i n th e col u m n h ead ed "Ri m " are cod es rel ated to m easu ri n g ri m wi d th , R m (see Tabl e for code correl ati on ) Meth od of m easu rem en t of tyre d i m en si on s Before m easu ri n g , tyres sh al l be m ou n ted on th e m easu ri n g ri m , i n fl ated to th e recom m en ded pressu re, an d al l owed to stan d for a m i n i m um of 24 h at n orm al room tem peratu re, after wh i ch th e i n fl ati on pressu re sh al l be readj u sted to th e ori g i n al val u e 8 Servi ce ch aracteri sti cs Tyre l oad -carryi n g capaci ty Load i n dexes are sh own i n Tabl e Speed sym bol Speed sym bol s are sh own i n Tabl e © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Load -carryi n g capaci ty at vari ou s speed s Wh en th e tyre i s fi tted on a veh i cl e wi th a m axim u m speed capabi l i ty d i fferen t from th e tyre referen ce speed , vari ati on s of l oad are g ran ted i n rel ati on to th e l oad correspon d i n g to th e l oad i n d ex (see Tabl es an d 9) To obtai n i m proved operati n g perform an ce u n der th ese di ti on s, i n fl ati on pressu res h i g h er th an th e basi c pressu re m ay be req u i red Tabl e Load TLCC In d ex (LI ) — Load Correl ati on between l oad i n d ex an d tyre l oad -carryi n g capaci ty (TLCC) TLCC I n d ex kg Load TLCC I n d ex (LI ) kg Load TLCC I n d ex (LI ) kg (LI ) Load TLCC I n d ex kg (LI ) Load TLCC I n d ex kg (LI ) Load TLCC I n d ex kg (LI ) kg 46 40 40 80 450 20 400 60 500 200 000 240 45 000 46, 41 45 81 462 21 450 61 625 201 500 241 46 250 47, 42 50 82 475 22 500 62 750 202 000 242 47 750 48, 43 55 83 487 23 550 63 875 203 500 243 48 750 50 44 60 84 500 24 600 64 000 204 000 244 50 000 51 , 45 65 85 51 25 650 65 50 205 500 245 51 500 53 46 70 86 530 26 700 66 300 206 000 246 53 000 54, 47 75 87 545 27 750 67 450 207 500 247 54 500 56 48 80 88 560 28 800 68 600 208 000 248 56 000 58 49 85 89 580 29 850 69 800 209 500 249 58 000 10 60 50 90 90 600 30 900 70 000 21 000 250 60 000 11 61 , 51 95 91 61 31 950 71 50 21 1 500 251 61 500 12 63 52 200 92 630 32 000 72 300 21 20 000 252 63 000 13 65 53 206 93 650 33 060 73 500 21 20 600 253 65 000 14 67 54 21 94 670 34 20 74 700 21 21 200 254 67 000 15 69 55 21 95 690 35 80 75 900 21 21 800 255 69 000 16 71 56 224 96 71 36 240 76 00 21 22 400 256 71 000 17 73 57 230 97 730 37 300 77 300 21 23 000 257 73 000 18 75 58 236 98 750 38 360 78 500 21 23 600 258 75 000 19 77, 59 243 99 775 39 430 79 750 21 24 300 259 77 500 20 80 60 250 00 800 40 500 80 000 220 25 000 260 80 000 21 82, 61 257 01 825 41 575 81 250 221 25 750 261 82 500 22 85 62 265 02 850 42 650 82 500 222 26 500 262 85 000 23 87, 63 272 03 875 43 725 83 750 223 27 250 263 87 500 24 90 64 280 04 900 44 800 84 000 224 28 000 264 90 000 25 92, 65 290 05 925 45 900 85 250 225 29 000 265 92 500 26 95 66 300 06 950 46 000 86 500 226 30 000 266 95 000 27 97, 67 307 07 975 47 075 87 750 227 30 750 267 97 500 28 00 68 31 08 000 48 50 88 000 228 31 500 268 00 000 29 03 69 325 09 030 49 250 89 300 229 32 500 269 03 000 30 06 70 335 110 060 50 350 90 600 230 33 500 270 06 000 31 09 71 345 111 090 51 450 91 900 231 34 500 271 09 000 32 112 72 355 112 1 20 52 550 92 1 200 232 35 500 272 1 000 33 115 73 365 113 1 50 53 650 93 1 500 233 36 500 273 1 000 34 118 74 375 114 1 80 54 750 94 1 800 234 37 500 274 1 000 35 21 75 387 115 21 55 875 95 50 235 38 750 275 21 000 36 25 76 400 116 250 56 000 96 500 236 40 000 276 25 000 37 28 77 41 117 285 57 25 97 850 237 41 250 277 28 500 38 32 78 425 118 320 58 250 98 200 238 42 500 278 32 000 39 36 79 437 119 360 59 375 99 600 239 43 750 279 36 000 © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Tabl e — Correl ati on between speed symbol an d speed categ ory Speed sym bol Speed categ ory km /h Tabl e — B 50 C 60 D 65 E 70 F 80 G 90 J 00 K 110 L 20 M 30 N 40 P 50 Q 60 R 70 S 80 T 90 H 21 Load -carryi n g capaci ti es at vari ou s speed s Tyres wi th l oad i n d ex (si n g l e) u 21 — an d speed sym bol J an d above Load , %, for speed sym bol Speed km /h J K L M Stati c 250 250 21 10 80 80 75 15 65 65 60 See See See See See See See See 30 25 25 35 Col u m n col u m n col u m n col u m n col u m n col u m n col u m n col u m n 50 112 112 20 L L L L L L L L 70 07 07 1 2, 85 03 03 08, 00 00 00 05 110 96 00 02, 20 88 93 00 00 00 00 00 00 00 00 30 95 00 40 90 95 N P Q 50 60 — R S T — — 70 — H — — 80 — — 90 — — 21 N OTE Th e i n fl ati on pressu re sh al l be i ncreased for l oad adj u stm en ts above 25 % or for speeds above 60 km /h i n consu ltati on wi th N OTE Load ad j u stm en ts are val i d for use on i m proved su rface on l y N OTE Con su l t ri m an d wh eel m an ufactu rers for fi rm ati on of th e stren gth of th e rim /wh eel for th e i n ten ded servi ce N OTE For 70 km /h an d above "speed " m eans th e speed capabi l i ty of th e veh i cl e (m axi m um speed u n der fu l l y l ad en d i ti on s) For th e tyre m an u factu rer 65 km /h an d bel ow, "speed" m ean s th e operati n g speed of th e veh icl e 10 © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Tabl e — Load -carryi n g capaci ti es at vari ou s speed s Tyres wi th l oad i n d ex (si n g l e) — W 22, speed sym bol s F to M Load , %, for speed sym bol Speed km /h F Stati c 250 10 80 15 65 30 25 50 112 65 07, 08, 08, 80 00 04 04 90 94 00 02 00 85 95 00 87 96 00 00 00 — 88 93 00 00 — — — 00 110 — 20 30 G J K L M See col u m n F See col u m n J N OTE Th e i n fl ati on pressu re sh al l be i ncreased for l oad ad j u stm en ts above 25 % i n su ltati on wi th th e tyre m an u factu rer N OTE Load adj u stm en ts are val i d for use on im proved su rface on l y N OTE Con su l t rim an d wh eel m an ufactu rers for fi rm ati on of th e stren gth of th e rim /wh eel for th e i n ten ded servi ce N OTE For 70 km /h an d above "speed" m eans th e speed capabil i ty of th e veh i cl e (m axi m um speed u n der fu l l y l ad en di ti on s) For 65 km /h an d bel ow, "speed" m ean s th e operati n g speed of th e veh icl e © I SO 002 – Al l ri g hts rsedevre 11 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) An n ex A (i n form ati ve) G u i d el i n e val u es for m etri c seri es, ° ri m s Th ese val u es wi l l serve as a g u i del i n e for th e d esi g n of tyre d i m en si on s, m etri c seri es, m ou n ted on ° tapered d rop-cen tre ri m s (cod e-d esi g n ated) wi th n om i n al ri m di am eters u p to code i n cl u si ve For tyres m ou n ted on ° tapered drop-cen tre ri m s (cod e-d esi g n ated) , see an n ex B For tyres m ou n ted on d i fferen t types of ri m s (m i l l i m etred esi g n ated ) , oth er an n exes wi l l be establ i sh ed Tabl e A — Di m en si on al g u i d el i n es for m etri c 12 to “ 75 ” seri es tyres on ° tapered ri m s Tyre d esi g n di m ensi on s, m m N om i n al Measu ri n g secti on ri m wi d th Desi g n wi d th cod e secti on wid th SN Rm S mm a “ 00 ” Desi g n secti on h ei gh t Nom i n al aspect rati os, a , H Approved ri m wi d th cod es H/S 00 95 90 85 80 75 m ax 25 50 26 25 119 113 06 00 94 35 50 33 35 28 22 115 08 01 5 45 00 45 45 38 31 23 116 09 5 55 50 57 55 47 40 32 24 116 65 50 65 65 57 49 40 32 24 75 00 77 75 66 58 49 40 31 5 85 00 84 85 76 67 57 48 39 95 50 96 95 85 76 66 56 46 205 50 203 205 95 85 74 64 54 21 00 21 21 204 94 83 72 61 5 225 00 223 225 21 203 91 80 69 235 50 235 235 223 21 200 88 76 245 00 248 245 233 221 208 96 84 255 00 255 255 242 230 21 204 91 265 50 67 265 252 239 225 21 99 275 50 274 275 261 248 234 220 206 285 00 286 285 271 257 242 228 21 295 00 294 295 280 266 251 236 221 305 50 306 305 290 275 259 244 229 31 50 31 31 299 284 268 252 236 10 325 00 325 325 309 293 276 260 244 10 335 00 333 335 31 302 285 268 251 5 345 50 345 345 328 31 293 276 259 11 355 00 357 355 337 320 302 284 266 11 365 00 364 365 347 329 31 292 274 1 Th e fi g u res are based on n orm al tread pattern tyres © I SO 002 – Al l ri g hts rsedevre 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Tabl e A N om i n al Di m en si on al g u i d el i n es for m etri c Th eoreti c secti on ri m wi d th wi d th S — R N M easu ri n g Desi g n ri m wi d th secti on cod e wi d th R th m “ 70 ” , “ 65 ” an d “ 60 ” Desi g n secti on h ei g h t S a , H Approved ri m wid th cod es mm m ax N om i n al aspect rati os, Nom i n al aspect rati os, N om i n al aspect HS HS / K mm a = , 70 K seri es tyres on ° tapered ri m s = , 75 mm 70 65 rati os, / 60 70 65 60 70 an d 65 HS / 60 65 4, 55 5, 70 1 07 99 5 5 5 75 4, 82 5, 77 23 1 05 5 5 5 85 5, 5, 89 30 20 1 5 5 6 95 5, 37 6, 201 37 27 1 5 5 6 205 5, 65 6, 209 44 33 23 5 5 6 21 5, 93 6, 221 51 40 29 5 6 7 225 6, 20 6, 228 58 46 35 6 7 235 , 48 7, 240 65 53 41 6 7 245 , 75 7, 48 72 59 47 7 255 7, 03 7, 260 79 66 53 7 8 265 7, 30 8, 272 86 72 59 7 8 275 7, 58 8, 79 93 79 65 7 8 285 7, 85 8, 292 200 85 71 8 9 295 8, 8, 299 207 92 77 8 9 305 , 41 9, 31 21 98 83 8 31 8, 68 9, 323 221 205 89 8 1 325 8, 96 9, 331 228 21 1 95 9 1 335 9, 23 0, 43 235 21 201 9 5 1 45 9, 51 0, 350 242 224 207 9 1 1 355 , 78 0, 362 249 231 21 1 1 1 365 0, 06 1 ,0 75 256 237 21 9 1 1 Th e fi g u re s are bas e d o n n o rm al tread pattern tyre s © I SO 002 – Al l ri g h ts rse d evre 13 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: 3: 39 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI I SO 4209-1 : 2001 (E) Tabl e A — Di m en si on al g u i d el i n es for m etri c seri es N om i n al Th eoreti cal Measu ri n g ri m Desi g n secti on wid th ri m wi d th wi d th cod e secti on wid th S N mm a 14 R K R th = , 70 K m “ 55 ” an d “ 50 ” seri es tyres on ° tapered ri m s Desi g n secti on h ei gh t a , H Approved ri m wid th cod es S mm N om i n al aspect rati os, HS / = 0, 80 mm 55 50 m ax 65 4, 55 5, 70 91 83 5 75 4, 82 5, 82 96 88 5 85 5, 6, 94 02 93 5 95 5, 37 6, 201 07 98 6 205 5, 65 6, 21 1 03 6 21 5, 93 7, 226 1 08 225 6, 20 7, 233 24 1 235 6, 48 7, 245 29 1 7 245 6, 75 7, 253 35 23 255 7, 8, 265 40 28 265 7, 8, 277 46 33 8 275 7, 8, 284 51 38 285 7, 85 9, 297 57 43 295 8, 9, 309 62 48 305 8, 41 9, 31 68 53 31 8, 68 0, 328 73 58 325 8, 96 0, 336 79 63 5 335 9, 23 0, 348 84 68 1 45 9, 51 1 ,0 360 90 73 1 355 9, 78 1 ,0 367 95 78 1 365 0, 06 1 ,5 380 201 83 1 Th e fi g u re s are bas ed o n n o rm al tre ad pattern tyres © I SO 002 – Al l ri g h ts rse d e vre