¿ B S I BS*AU *SO PTL S U B S E C * 5 * 2 94 Lb24bb9 0408375 583 W BRITISH STANDARD AUTOM0BII;E SERIES Tyres and wheels Part 1 Tyres Section 5 Industrial vehicle tyres Subsection 5 2 Specification for[.]
¿ B S I B S*AU *SO: PTL :SUBSEC*5*2 94 Lb24bb9 0408375 BRITISH STANDARD AUTOM0BII;E SERIES W BSAU50: Partl: Subsection 5.2 : 1994 I S 3739-1 : 1992 Tyres and wheels TW- 2F pages Part Tyres Section Industrial vehicle tyres Subsection 5.2 Specification for pneumatic tyres (metric series) on ci0 tapered or flat base rims: Designation, O O dimensions and marking UDC 629.11.012.53 : 62-182 BSI BS*AU*SO: PTL BS AU 60 : Part : Subsection : SUBSEC* -2 : Lb24669 04 837 4LT 1994 National foreword O This Subsection of this Part of BS AU has been prepared under the direction of the Automobile Standards Policy Committee and is identical with IS0 3739-1 1992 Industrial tyres and Part Pneumatic tyres (metric on 5" tapered orflat base Designution, dimensions and marking, published by the International Organization for Standardization(ISO) Other Parts of this standard are: Part Wheels and Part Vulves Part Rim profiles and dimensions 50 : rims - ; series) rims - rim Cross-references Internationalstandard Corresponding B ritish Standard BS 5776 Spe&fication for quantities, units and symbols Part O 1982 General principles The %chnical Committee has reviewed the provisions of IS0 3877-1 and IS0 4223-1 to which normative reference is made in the text and has decided that they are acceptable for use in conjunction with this standard IS0 31-0 1981 : : Compliance with a British Standard does not of itself confer immunity a from legal obligations e O BS AU 50 : Part : Subsection : 1994 Contents page National foreword Inside fro nt page Back page Committees responsible S pecification Scope Normative references Definitions Tyre designations Marking Tyredimensions Design tyre dimensions Tyre size combinations Method of measurement of We dimensions ~ ~~ ‘ Igbles Nominal rim diameter code Correlation between load index (LI) and tyre load-carrying capacity (TLCC1 3 Correlation between speed symbol and s peed category Coefficients for calculation of maximum overall tyre dimensions in service Recommended combinations of nominal section widths and diameters 5 Tyre dimensional guidelines ri m I S 3739-1 :1 992(E) I N TE R N ATI O N AL S TAN D AR D Industrial tyres and rims - Part I: Pneumatic tyres (m etri c seri es) on 5" tapered o r fl at base ri m s - Designation, di m ensi ons and m arki n g I S 31 -0:1 981 , General principles concerning quanti- Scope ties, units and symbols Th i s p art o f I S 3739 speci fi es m en ts, i n cl u d i n g m arki n g s of th e th e d esi g n ati on s, m n re q u i re - d i m e n si o n s an d m e t ri c se ri e s o f pn e u m ati c tyre s p ri m ari l y i n te n d e d for i n d u s t ri al ve h i cl e s for u se o n pre pare d su rfaces Th e t y re s a re base d o n th e fol l ow¡ n g param e te rs : a) speed s n o t exceed i n g 50 km /h ; b) u se o n 5" tap e re d o r fl at base ri m s; c) r i m d i am ete rs n o t exceed i n g ri i n d i am e t e r cod e I S 3877-1 :1 978, Tyres, valves and tubes - List equivalent terms I S 4223-1 :1 989, Definitions some terms used in d efi n i ti on s I S 4223-1 ; of te rm s e q u i val e n t IS0 3877-1 Tyre designations re l ati n g t e rm s tyre s, to are g i ve n see in The extension of the range of thi s nominal ri m diam eter code may be considered of I : Pneumatic tyres Definitions For NOTE of 1: Tyres Part fh e tyre industry - Part o f - I S 3739-2 d eal s wi t h l o ad rati n g s; IS0 3739-3 d eal s wi t h r i m tou rs fo r th e se tyres 4.1 D i m e n s i o n a l a n d co n s tru cLan a c h a rac t e ri s ti c s Th e ch aracte ri sti cs sh al l b e i n d i cate d as fol l ows: Nomlnal ri m diameter wl d th Normati ve references Th e fo l l o wi n g stan d ard s co n tai n pro vi si o n s wh i ch , 4.1 rati o code cod e Nominal section width th ro u g h referen ce i n t h i s text, co n sti tu te pro vi si o n s o f t h i s p art o f I S 3739 At th e t i m e o f pu bl i cati on , th e e d i ti o n s i n d i cate d we re val i d A l l stan d ard s are Th e n o m i n al secti on wi d t h o f th e t y r e sh al l be i n d i cate d i n m i l l i m e t re s , e n d i n g e i th e r i n su bj ect t o re vi si o n , an d parti e s to ag re e m e n ts based O or o n t h i s part o f I S 3739 are en cou rag ed to i n ve sti g ate t h e po ssi bi l i ty of appl yi n g th e m o st re ce n t e d i - 4.1 Nominal aspect rati o ti o n s of th e stan d ard s i n d i cate d bel ow M e m be rs of I EC an d I S m n tai n re g i ste rs o f cu rre n tl y va l i d I n - Th e n o m i n al aspect t i o sh al l te rn ati o n al Stan d ard s pe rce n tag e an d s h al l be a m u l ti p l e o f be e xpre sse d as a BSI : S UBS E C * - B S*AU *SO: PTL 624bb9 04 837 129 W I S 3739-1 : 992(E) 4.1 Tyre construction code Th e ty re co n stru cti o n cod e sh al l be as fol l ows: Servi ce co n d i ti o n c h a c t e ri s ti c s Th e se rvi ce co n d i ti o n ch aracte ri sti cs o r servi ce descri pti o n sh al l be i n d i cate d as fol l ows: D or R fo r rad i al p l y stru cti on (a d ash ) fo r d i ag o n al stru cti on ; "-" Load i n d e x 4.2.1 Speed sym bol Load index Th e l o ad i n d e x i s a n u m e ri cal cod e associ ated wi th 4.1 a m axi m u m l o ad a ty re can carry at th e speed i n d i - Nominal ri m diameter code cated by i ts speed sym bo l u n d e r se rvi ce d i ti on s For ty re s m o u n te d o n e xi sti n g ri m s, th e cod e sh al l be as g i ve n i n t a b l e l speci fi ed by th e t y re m an u factu rer Th e co rre l ati o n between l o ad i n d i ce s an d ty re l oad carryi n g capaci ti e s sh al l be as g i ve n i n tabl e Nom i nal ri m d i am eter code 10 12 15 Nom i nal ri m d i am eter, mm 02 52 203 229 D, 4.2.2 Speed symbol Th e speed sym bol sh al l as g i ve n i n t ab l e Th e e re n ce speed d efi n ed as th e speed at wh i ch th e tyre can c a rry th e l o ad co rre spon d i n g t o i ts l o ad i n d e x u n d e r th e speci fi ed se rvi ce d i ti on s 254 305 38 Th e re fe re n ce speed for t y re l o ad i n d u s t ri al sym bo l A5 be speed sym bo l o r speed categ ory i n d i cates th e ref- tyre s sh al l be i d e n ti fi cati o n o f km /h , ¡ e speed BSI BS*AU*SO: PTL : SUBSEC*5 94 m 38 94 Lb24669 m ISO LI TLCC LI - 3739-1 : 992(E) (TLCC) ~ LI TLCC kg TLCC LI TLCC LI kg kg kg TLCC kg 40 40 80 450 20 400 60 500 200 OM 41 45 81 462 21 450 61 625 201 500 42 50 82 475 22 500 62 750 202 43 15 83 487 23 550 63 875 203 44 I RJ 84 500 24 600 64 000 204 o00 500 000 45 65 85 51 25 650 65 50 205 500 46 70 86 530 26 700 66 300 206 17 O00 47 75 87 545 27 750 67 450 207 500 wu 48 80 88 560 28 800 68 5600 208 18 49 85 89 580 29 850 69 800 209 500 50 90 90 600 30 900 70 6000 21 51 95 91 61 31 950 71 50 21 1 500 52 200 92 630 32 2000 72 300 21 20 53 206 93 33 060 73 500 21 20 600 54 21 94 650 670 34 20 74 700 21 21 200 55 21 95 690 35 80 75 900 21 21 800 56 224 96 71 36 240 76 00 21 22 400 57 230 97 730 37 77 300 21 23 58 236 98 750 38 360 78 500 21 23 600 59 243 99 775 39 430 79 750 21 24 300 60 250 00 800 40 500 80 8000 220 25 O00 61 257 01 825 41 575 81 250 221 25 750 62 265 02 850 42 650 82 500 222 26 0 63 272 03 875 725 83 750 223 27 250 64 280 04 900 43 44 800 84 goo0 224 28 65 290 05 925 45 900 85 250 225 29 0 66 300 06 950 46 86 500 226 30 67 307 07 975 47 075 87 750 227 750 68 31 08 1 48 50 88 10 228 31 500 69 325 o9 030 49 250 89 300 229 32 0 70 335 110 060 50 350 90 600 230 33 0 71 345 111 1 51 450 91 900 231 34 72 355 112 1 20 52 550 92 1 200 232 35 0 73 365 113 1 50 53 650 93 1 500 233 375 114 1 80 54 750 94 1 800 234 36 500 74 75 387 115 21 55 875 95 50 235 38 750 76 400 116 250 56 96 500 236 O00 77 41 117 285 57 25 97 050 237 42 250 78 425 118 320 58 250 98 f 200 238 42 0 79 437 119 360 59 375 99 600 239 43 750 000 O90 Tabl e 300 O00 O00 O00 o00 o00 O00 O00 O00 500 37 0 - Correlati on between speed symbol and speed category I Speed I symbol km /h I I A2 I S pe e d ca t e g o ry 1) 10 A3 15 A4 20 A5f) 25') A6 30 A7 35 A8 40 B 50 See 4.2.2 I BSI : SUBSEC*S Z B S*AU *SO: PTL 94 m 38 8 b24bb9 m IS 3739-1 :1 992(E) 4.3 5.2 O t h e r servi ce ch aracteri sti cs 4.3.1 Th e wo rd ch ara cte ri z e “TU BE LE SS” t y re s th at can s h al l be u sed b e u s e d wi t h o u t to If M a x i m u m s p e e d m a r ki n g th e m ax i m u m a tu b e on th e 4.3.2 S p e ci fi c ad d e d to o f ro t ati o n , i n d i c ati o n s , sh ow fo r if e x am p l e i n d i c ate d re q u i re d , th e m ay p re f e rre d m ax i m u m for t y re , 40 “m ax m a r ki n g s h al l th e by an a r r o w th e co n s i s t d e s i g n ati o n th an km /h or m ax ” l y r e dimensions of 6.1 of th e d i m e n s i o n al an d co n - c h ara c te ri s t i c s : d e s i g n ati o n t e ri s t i c s val u e s fo r d esi g n t y re di m en - be ro u n d e d to th e n e are s t m i l l i m e t re see IS 31 -0, an n e x Fo r B ( l o ad of th e s e rvi c e co n d i ti o n i n d e x an d s p e e d c h ara c - 6.1 Theoretical ri m width, Rth th e n o m i n al Rfh = t h e d e s i g n ati o n o f o th e r s e w i c e ch ara c te ri s t i c s Th e l o c at i o n o f th e ch ara c te ri s t i c s d i s ti n ct bu t d i m e n s i o n al No m arki n g ( l o ad in o f th e i n d e x an d th e vi c i n i ty of a n d co n s tru c t i o n al s e rvi c e speed th e co n d i ti o n s ym b o l ) m a r ki n g s h al l o f th e is o th e r s e rvi c e s p e ci fi e d fo r th e ch arac te ri s t i c s Fo r i n d u s t ri al t y re s = 0, ap p l i e s as p e ct m arki n g s ( s e e 4.3.1 re l ate d to m arki n g of 1 6A5 m a r ki n g s ym bo l TUBELESS d i m e n s i o n al l o ad ( d i s ti n c t vi c i n i ty o f th e i n dex an d co n - l o c at i o n Th e speed bu t in S th e m arki n g ) d i s c re ti o n m arki n g s are = SN R, + of a t yre wi t h th e n o m i n al n o m i n al Th e s e cti o n n o m i n al l o ad wi d t h e q u al to d esi g n d i am e t e r i n dex (LI ) speed s ym bo l tyre t o th e th e n o m i n al t h e o re t i c a l X,: Xt h ) - i n m i l l i m e tre s , th e n o m i n al as p e ct s e cti o n n o m i n al rat i o , h e i g h t, s e cti o n I f/ S (IJ/S II /I , is e q u al wi d th , S,, e xp re s s e d to an d th e th e as a p e r- HIS O0 I co d e , co rre - co rre s p o n d i n g to a 6.1 Th e th e l o ad o f 250 kg ; c o rre s p o n d i n g s p e e d c a te g o ry o f 25 TUBELESS: ri m , is S, f ro m are e xp re s s e d ty re of Design tyre overal l di ameter, d esi g n n o m i n al no t y r e s e cti o n A5: S wi d th , tran s f e rre d 0, 4(R, p ro d u c t as p e ct r a t i o e q u al to 65; ri m fl at defi n ed l ate r for oth er Design tyre section height, r a d i a l p l y co n s tru cti o n ; t y re be ab o ve s p o n d i n g t o 229 m m ; 1 6: s e cti o n m e as u ri n g an d h!th !!=SN- 9: S,, th e ce n tag e ) : R: val u es may an d n o m i n al i n cl u s i ve m an u fac t u re r 80 m m ; 65: t o 85 h avi n g o f th e as fo l l o ws : 80: tyre wi d t h , Rth, t o ri m , 6.1 c h ara c te ri s t i c s tap e re d th e types d esi g n s e c ti o n an d p re c e d i n g l e ft to t h e Ki Other ri m 5” on an d SN, fo r ty re s Design tyre section width, wh e re l o c at i o n tyre Th e m o u n te d (Z1l.c) fro m e q u al t o t h e p ro d u c t wi d th , an d 2) c h ara c te ri s t i c s of rat i o s tyre and 6,1 s t ru c ti o n al Ki ri m s , c h arac te ri s t i c s E XAM P LE 180/65R9 Ki& K, : s e cti o n b as e NOTE l o c at i o n Rth, i s r i m wi d th , Th e th e o re t i c a l of s ym b o l ) ; Cal cu l ati o n of “ d esi g n t y r e ” d i m e n s i o n s r i m /s e c t i o n rat i o , “ 40 e x am p l e Th e f o rm u l ae - d e ri ve d s t ru c ti o n al be l ess be m arke d G e n e r a l m a r ki n g Th e c) is be ro u n d i n g of val u e s , b) tyre km /h ” s i o n s s h al l a) a s p e e d s h al l d i re c ti o n Marki n g 5.1 of speed 50 km /h , i t s actu al km /h ; be u s e d wi t h o u t a tu be to a = n, ty re o ve l l ri m h e i g h t, + For th e val u e s II: d i am e t e r, d i am e t e r, Do Do, Ilr, p l u s i s th e t wi c e th e 21 of D, t o b e u se d , s e e t ab l e su m of d esi g n BS I B S*AU *SO: PTL :SUBSEC*5-2 94 713 0408382 Lb24bb9 I S 3739-1 :1 992(E) Guidelines for tyre dimensions prod u ct o f th e d e s i g n t y re secti on h ei g h t, appro pri ate co effi ci en t, Do,,,, D, + G u i d el i n es for t h e d e s i g n t y re d i m en si o n s a re g i ve n = i n tabl e 5, 6.2 Maximum overall width i n service, wi d th in ratio 1 -1 65 to a5 Rad l al W, , , servi ce, D or Di ag on al appro pri ate to th e d e s i g n t y re o ve l l Coefficients for calculation of maximum Construction secti on wi d th an d d e s i g n t y re secti on h ei g h t m axi m u m an d t h e Hh consirudion Th ese d i m en si o n s are t o be cal cu l ate d wi th th e co- Th e H , 4): overal l tyre dimensions in service i n d esi g n i n g fo r t y re cl earan ce 6.2.1 - Table Th i s cal cu l ati o n i s for u se by ve h i cl e m an u factu rers 4) (see tabl e + Cal cu l ati o n of “ m a x i m u m o ve r a l l t y r e d i m e n s i o n s i n servi ce” effi ci en ts (see t a b l e b W ,,,,, is e q u al t o th e prod u ct of th e d esi g n t y re secti on wi d th , S, a (see tabl e 4): an d th e appro pri ate co effi ci en t, w,,,= Sa 2 Maximum overall diameter in Th e re l e van t d i m e n s i o n s for th e re co m m e n d e d m et- Do,,,, service, Design tyre dimensions ri c se ri e s wi d th , of i n d u s t ri a l t y re m e as u ri n g Table - d esi g n h e i g h t for tyre s 85 are of sh own i n tabl e Tvre dimensional guidelines Nomi nal secti on Desi gn tyre di mensi ons, mm wi d th M easu ri n g ri m LYN secti on secti on n o m i n al aspect rati o s 65 t o an d secti on t y re tyre wi d th e q u al t o th e n o m i n al r i m d i am eter, pl u s twi ce th e t y re d esi g n wi d th , Th e m axi m u m o ve l l d i am e te r i n servi ce, Do,m ax, is Il, , n o m i n al ri m wi dth code mm Secti on Secti on hei ght, H, at nomi nal aspect rati os HIS (YO) wi dth S 85 80 75 70 65 98 85 80 75 70 65 77 72 O0 2.5 110 25 112 94 88 83 125 25 123 106 O0 94 88 81 140 141 119 112 105 98 91 160 4.0 156 136 128 120 112 104 180 5.0 180 153 144 135 126 117 200 5.0 195 170 160 i 50 140 130 225 228 191 180 169 158 146 175 163 250 246 213 200 188 200 8.0 283 238 224 210 196 182 315 308 268 252 236 22 I 205 355 10.0 357 302 284 266 249 231 B S I BS * AU* S O: P T L IS0 : SUBSEC*5 94 = Tyre si ze combinations - Table Recommended combinations of nominal section wi dth s and ri m diameters wi d th s an d ri m d i am e te rs for m e t ri c se ri e s o f i n d u s- N o m i n a i tyre t r i a l t y re s are sh own i n t a b l e S N Method of measu rem ent of tyre O0 110 dimensions 25 40 be m o u n te d 60 on i ts m e as u ri n g ri m , i n fl ate d to th e re co m m e n d e d B e fo re be i n g m easu red , t h e t y re sh al l 80 minimum of 200 a fl e r wh i ch th e 225 pre s s u re , an d al l o we d t o stan d for a 24 h at n o rm a l ro o m te m pe ratu re , N om i n al ri m d i am eter co d el ) sectl on wi d th mm 250 i n fl ati o n pre s s u re sh al l be re ad j u s te d to t h e o ri g i n a l 280 val u e 31 355 1) - - - 10 - * - - - - 12 15 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - Combinations marked wi th an asterix ( * ) are rec- ommended c 3739-1:1992(E) Th e re co m m e n d e d co m bi n ati o n s o f n o m i n al secti on L b 6 04 38 b T BSI v B S*AU *SO: PTL :SUBSEC*5-2 94 W BS AU e L is t of references See national foreword Lb24669 38 596 50 : Part : Subsection 5.2 : 1994 BSI BS AU B S*AU *5O: PTL m 162 669 38 :SUBSEC*5=2 422 m ~ 50 : Part : Subsection : Committees resp onsib le for th i s 1994 IS0 3739-1 : B ritish Standard 1992 The preparation of this B ritish S tandard was entrus ted by t h e Automobile S tandards Policy Committee (AUE/-) to Rc hnic al Committee AUE/4, upon which th e following bodies were represented: Agricultural Engineers’ Association Automobile Association B ritish Industrial Truck Association B ritish Pressure Gauge Manufacturers’ Association B ritish Rubber Manufacturers’ Association Bus and Coach Council Department of Transport Freight Transport Association Ins titute of Road Transport Engineers (Inc) Motor Cycle Industry’ s Association of Great B ritain Ltd Motor Industry Research Association National Tyre Distributors’ Association Retread Manufacturers’ Association Road Haulage Association Ltd S ociety of Motor Manufacturers and Traders Ltd Amendments issued since publication This B ritish S tandard, having been p rep ared u nde r t h e direction of Rxt affected Date Amd No t h e Automobile S tandards Policy Committee; was published u nder t h e autho rity of t h e S tandards B oard an d comes into effec t o n February 994 O BSI 994 The following BSI referenc es relate t o the work o n this s tandard: Committee referenc e AUE/4 D raft for co mment 90/7763 DC ISBN 9402- O 680 22803 6- 4k- B B S I, TW- Park S treet, London 2.2F- 12 W U 2BS B S I, M o r d Wood, Miiton K e y n e s MK14 6LJ3 Au E/4 -