oeral l width = dsign nw tyre sctl on width K3.W... Se national foreword.
Trang 1BRIT IS H S TANDARD AUTOMOBTTIESER I ES BSAU50:
1991
d im ens io ns
(Inclu in Amen ment 1: 19 0)
(Sup rsedin BS AU 5 :
prt 1: S bse tion 3.1 : 19 9)
T W-2D
1 pa g e s
Trang 2-BS AU 50 : Pa rt 1 : Subsec tion 3.la :1991
Thi s Su se tio oft his Par t ofBS AU 5 , prepa red u der the d irectio ofthe
Au to mo b i l e St a nd r ds Polcy Commite e , is ident ica l wit h IS 4 6 -1 : 19 8
‘N a rr ow a d wide base of-roa d t yr es a d rims - Par t 1: Tyre d esig at io a d
dime n sion s’a s am en ed b IS 4 6 -1 : 19 8/Amd 1: 19 0 a d pu bl ish e d b
the Int er na t io a l Organ i zatio for St an aidizat io ( ISO) S bse tio 3.2 ofthe
Par t d eals wit h t yr e l oads a d inflat io pr es ures Other P a rts ofthe st an ar d
ar e:
Pa rt 2 Whee ls a d rims;
Pa rt 3Valves ,
This ed it io su ersed es BS AU 6 : Pa r t 1: Se cti on 3 : Su se tio 3.1 : 19 9,
which is wit hdr awn
Cr os -r ef r enc es
The Techni cal Commite e h s re vie we d the prov ision s ofIS0 4 23-1a d
IS 4 2 6 0 -3, to which r ef r enc ism ade i n the text, a d ha s d ecid ed th t t hey are
a cc ptable for u se in co ju ctio wit h t his st a nd r d
N CEE The ful provision s of IS0 4 6 -3 : 19 7 wi b in cl u de d in a future re v ision of Bs A 60 :
P art 2 : Se ction 1: 19 0
Co m pliance with a Br it ish Stand ard does not of it elf c nf r i m m u n ity fr o m
legal obl gat ions
Trang 3BSAU 50 : P a r t 1 : Su bse c ti on 3.la : 1991
C ontents
Pag e
1 Sco p e
2 Fi el d ofa pplca tio
5 Ty re d esig a tio
7 Du al spacin
8 Re comme n de d rims
9
Me th od ofm easur em ent oftyre d im ensio s
làbles
3
3 a
4
5
5a
6
Tyre d im ensio s for n r r ow b se tyres
Tyre d im ensio s for n r ow ba se tyres o SDC rims
Tyre d im ensio s for wide ba se tyres
Di mensi o ns for na r r ow base tyres m ou t ed o 15Ormco t our s
Ty re d im ensio s for 6 5 ser ies t yr es
Re comme n de d rims for d ia go a l a d radi al n r r ow ba se tyres for
ear th-m ovin ser vic , mo b i l e cr anes, sh vels, mi ni ng ca rs, loa d er s
a d d oz rs
Re comme n de d rimsfor d ia go a l a d rad ial tyres for roa d gr ad ers
Re comme n de d r ims for d ia go a l a d rad ial wide ba se tyres for
ea rth-m ovin , mi ni ng a d lo gging ser vic , mo bi l e cr anes, sh vels,
mi ni ng ca rs, loa d ers a d d oz rs
Re comme n de d r ir ns for d ia go a l a d radi al n r r ow b se t yr es
m ou t ed o 15Oco tour s
Re comme n de d rimsfor d ia go a l a d r ad ia l 65 ser ies tyres
6 a
7
8
9
8
8
9
9
9
Trang 4INT ERNATIONAL STANDARD IS0 4 5 -1 19 8 (E)
O
O Intr oduction
IS 4 5 prov id s tec hnic a l d t a ils o th d sig a t io a nd
dime sio s of o -roa d ty res a nd rims, as w el as loa d rat in s
for t hese ty pes of t y res
T his Int erna t io a l St an ard consist s of t hree pa rts :
Part 1 : Tyre d sig at io s and dime sio s
Part 2: Loa s and infla t io p re ss ure s
Part 3: Rims
T his D art of IS0 4 5 se ts o t d sig a t io s and dime sio s for
na rrow and w id b se o -roa d tyis a d recomme d d rims
2 F ie ld of appl c tion
T his pa rt of IS0 4 5 app lies to ty res primarily inte d d for o ff-
roa d ma chin s
IS04 23-1, Definitio s ofsome terms used in th tyre indus-
try - Part 1: Pn umatictyres
IS04 5 -3, Narowa d wide bse of-ro d tyres a d rims
-Part 3: Rims
For d f init io s of t erms rela t in to tyre s, se IS0 4223-1
5 T y r e de ignation
The d sig a tio of t yres sha ll in lu e th d t ails in 5.1 a nd 5.2;
it may inc lu e t hose in 5.3
5.1 Tyre size a d c n tru tio c d
Tyres sha ll b d sig at ed b a two-p rt size ma r kin (n mina l
sec t io width - n mina l rim diamet er c od ) ex cep t as n t ed in
th t ables Dia go al ply c onstruc tio shall n t b sp c i ly
mark d Ra ial ply c onstruc tio sha ll b id nt i e b th leter
"R" inst ead of th d ash , b fore t he rim dia met er in t he size
d sig at io Inaddit io , th word "a ial" ma y also app ear o
th t yre
5.2 ind x of tyre stre gth
T he term is use to id nt if y a giv en t y r e with its maximum
recomme d d loa d w he use in a sp ecif ic ty pe of s ervic
5.3 Other markin s
Ot her markin s ma y b e a d ed , for examp le as in 5.3.1 to 5.3.4
5.3.1 Prefere dire tio of rotatio
T he ma rkin to in ica t e th pr ef err ed direc t io of rot at io s hal
b e a n arrow
5.3.2 T ubele s tyre
Tyres sha ll b e ma rk d " TUB ELES S" , if app lic able
Trang 55.3.3 Co e s stem for tyre u a e
Tyres m ay b id ntifie b t heir t y pe of ser vice and t rea d d sig
as in ica t ed in t a b les 1and 2 resp ect iv ly
Ta le 1 - Ty e of s rvic
5.3.4 Semi-dro c ntre rims
"TG" shall b us ed to id ntify ty res mo nt ed o semi-drop
c nt r e (SDC) rims (s e IS04 5 -3)
tr actor -s r ap r)
NO TE -The us e of t he e id ntific tio cod s is at th dis r etio of tl
in ivid al tyr e ma ufa tur er
Ta le 2 - Tre d d sig
Code
c-1
c-2
E-I
E-2
E-3
E - 4
E-7
G-I
G-2
G-L-2
L-3
L-4
L-5
Tread type
Smo th
Gr oo e
Rib
T ra tio
Rock
Rock ( de e p tr ea )
Flotatio
Rib
T ra tio
Rock
T ra tio
Rock
Rock (d e tr ea )
Rock (e tr a de e p tr ea )
NO TE
1 T he us e of t he e id ntific tio c od s is at th dis r etio of th
in ivid al tyr e ma ufa tur er
2 Wh re smo th tr ea s are u e in th "L" series, this s o ld b
d n te b th s fix "S" (or e xamp le, L-5S)
3 Co e ty e 1, 2 and 3 are d sig at ed a n rmal tr ea d pth
6 T y r e dime sions
Tyre dime sio s sha ll b as lste :
T a ble 3 : Nar ow b se t y r es
T a ble 3 : Narow base tyr es o SD rims
T a ble 4 :
Wid bse t yres
T a ble 5 : Nar ow b se t y r es o 15' rim c nto r s
T able 5 : 6 seri es ty res
R ec mme d d minimum d al sp a cin s al b e d sig sec t io
width x 1,2
Rec omme d d rims are given as folows :
T a ble 6 : Nar ow bse t yres
T able 6 : Dia go a l a d r adial tyres for roa d gra e rs ,
T a ble 7 : Wid b se t yres
T a ble 8 : Nar ow bse tyr es o 15' c nto r rims
T able 9 : Dia go a l a d r adial 6 seri es t y r es
Bef óre me surin , ty res sha ll b mo nt ed o a measurin rim,
inflate to th rec omme d d pres ure, a d a llow ed to st an for
a minimum of 2 h a t n rma l ro m t emp erat ure, after whic
th inflatio pres ure sha ll b e readjust ed to th origina l v lue
Trang 6I
30.00 -3
30.00 - 51
33.00 - 51
37.00 - 5
4.0 - 5
IS0 4250-1 : 19 8 (E)
Ta le 3 - Tyre dime sio s for n r ow b s tyre
Dime sio s in mi metr es
Tyre size
d sig atio
Me s rin rim
w idth
Co e
De ig n wtyrel
I
In-s rvic 2J
I
Ma imumo eral
w idth
Ma imumo eral
diameters)
4 5
14.0 -2, 21
I
15 1
18.0 - 2, 2
18.00 -33
18.0 - 4
13.00
13.0
13.0
4 8
4 8
4 8
1615
1818
2 2 7
5 3
53
5 3
16 3
2 306
21.0 - 2, 2
21.0 - 35
21.0 -4
15.0
15.0
15.0
51
5 1
5 1
17 5 0
2 0
2 36 0
6 4
6 4
6 4
18 9
2 03
2 4
2 0 - 2
2 0 -2
2 0 -3
2 0 -4
2 0 -4
17 0
17 0
17 0
17.0
17.00
6 3
6 3
6 3
63
63
18 5
19 5
2 12
2 331
2 8
7 5
7 5
7 5
7 5
725
19 4
2 0 4
2 2 6
2 430
2 5 2
8 6
2 0 -3
27.00 - 4
2
914
914
992
I
2) In-s r vic dime sio s are th ma imum dime sio s for grown tyr es in-s r vic for us e b ma hin ma ufa tur er s in d sig in for tyr e cle ra ce s
I
Ma o eral width = d sig n w tyr e s ctio width (S.W ) x ( 1
+
tolera c )
Toler an e : S W < 3 0 mm: + 8 %
> 3 0mm: + 1 %
Max overa ll diamet er = (d sig n w tyr e overa ll diamet er - rim diameter ) x (1 + tolera c ) + rim diamet er
T oler an e : S W < 380 mm: + 6 %
> 380mm: + 8%
NO TE - See IS 4250- 3 for rim diamet er v lue s
3) Fig re are b as e d o t y re with n rmal tr ea d pth Th ma hin ma ufa tur er s o ld rec og ize th t t y re withde e p tr ea a d c rr es o din
increa se overa ll diamet er may be us e d
Trang 7IS0 4 5 -1 : 19 8 (E)
Ta le 3 ) - Tyre dime sio s for n r ow b s tyre o SDC rims
Dime sio s in mi metr es
Max imum ov e ral
I width
Tyre size
d sig atio n lJr )
13.0 - 2 TG
14 0 - 2 TG
16 0 - 2 TG
1) For ra ial tyre s , repla c e th da sh í -1 in th size d sig atio with "R"
2) "TG" is a d sig atio to b u e toid ntify tyr es mo nte o SD r ims
3) De ig n w tyr e dime sio s q ote in th t a b le are u e for tyr e d sig p rp s s o ly
4) Fig re are a se o tyr es with n rmal tr ea d pth Th ma hin ma ufa tur er s o ld rec og ize th t tyr es with de e p tr ea a d c rr es o d-
in increa se o eral diamet er may b us e d
5) In-s r vic dime sio s are th ma imum dime sio s for grown tyr es in-s r vic for us e b ma hin ma ufa tur er s in d sig in for tyr e
cle ra ce s
Max o eral width = [d sig n w tyre s ctio width
(S.W.)I
x (1 +
tolera c )
Toler an e : S.W < 38 0 mm: + 8 %
> 3 0mm: + 1 %
Max overa ll diamet er = (d sig n w tyre o eral diamet er - rimdiameter ) x (1 + tolera c ) + rim diamet er
Toler an e : S.W < 30 mm: + 6 %
> 380mm: + 8%
NO TE - S ee IS0 4 25 0-3 for rim diameter va lu s
Trang 8I I I 2 708
I) De ig n w tyre dime sio s q ote in the t a b le are u e for tyr e d sig p urp s s o ly
2) In-s r vic dime sio s are th ma imum dime nsio s for grown tyr es in-s rvic e for us e b ma hin ma ufa tur er s in d sig in for tyr e clea ra nc es
Ma o eral width = d sig n w tyr e s ctio width ( S.W.) x (1
+
tolera c )
Toler an e : S W < 3 0 mm: + 8 %
> 3 ûmm: + 1 %
Max o eral diamet er = (d sig n w tyr e o eraldiamet er -rim diameter ) x (1 + tolera c ) + rim diamet er
Toler an e : S.W < 30 mm: + 6 %
> 80mm:+8%
NO TE - S ee IS 4 25 0-3 for rim diamet er v lue s
Fig re are b a se o tyr es with n rmal tr ea d pth The ma hin ma ufatu!e r s o ld rec og ize th t tyr es withde e p tr ea a d c rr es o din
3)
increa se overa ll diamet er may b us e d
I 4) Sp cial size d sig atio
ISO 4 5 -1 : 19 8 (E) -
15 5 - 2
17.5 - 2
20.5 -2
Ta le 4 - Tyre dime sio s for wid b s tyre
Dime sio s in mi metr es
Tyre size
des ig a tio n
3 5 -33
33.5 -39
37.25 - 35
Me as ri g r im
w idth
C o de
D es ig n w tyre’)
I
In -s rvi ce 1
Max imum o vera ll Max imum o vera ll
26.5 -2
26.5 -2
2 5 -2
29.5 -2
29.5 -3
2 0
2 0
25.00
25.00
25 0
1873
1975
2 127
7 7
7 7
83
83
83
18 9
19 0
19 2
2 0 4
2 2 6
2 198
2 354
2 5 7
2 0
37.5 - 33
37.5 - 39
37.5 - 51
32.00
32.00
32.00
95 2
95 2
952
2 8
2 5 1
2 4
107
1O5
10 7
2 513
2 6 5
2 9 0
Trang 9IS0 4 6 -1 : 19 8 (E)
e
Tab le 6 - Dl m en sl on s f or n row b as tyre mo unted o 16Orim contours
Dimeslgs in ml me t r e s
Me s in rim
wi d th
Tyre size
3 - 6.6
3 - 69.6
I
1 Delg n ew t yre dimenion q u ote In th teble are ue f or tyre desi g n pu rpses on l y,
21 i n -srvi ce dl m an si on s are th maxim um dimenion for g rown tyre i n -stvl ce for ue by mahin m an u fatu rers In d eigning for tyre cl earance,
Max oeral l width = dsign nw tyre sctl on width K3.W.) x I t tol eran ce)
Tol eran ce: S.W < 30 mm: + 8 46
> 30mm: + 1 %
Mex oeral l di am eter = (d esi g n new tyre vral l diameter - ri m di am eter) x (1 f tolerance1+ rim diameter
Tol eran ce: SaW < 3 0m : + 8 %
>
380mm: f 8%
N T -Se IC04250-3 for rlm diameter vIuB
31 Figure are bsd o tyrea with n orm al tred d epth Th mahin m an u fe tu rer sh ou l d reog n i ze th t tyre with de tre d n d crep n d i n g
I ncresd oeral l d iam er may b e uwd
Trang 10Tyre size
d sig atio 1)
2 /65 - 2
3016 - 2
30165 -2
3 /65 - 33
4 16 -39
4 / 65 - 4
5 16 - 51
IS0 425 -1 : 19 8 (E)
Ta le 5 ) - Tyre dime sio s for 6 s rie tyre
Dime sio s in mi metr es
Trang 11Ta le 6 in ic te re omme d d rims for n row b s tyre
Ta le 6 - Re omme d d rims for dia o al a d ra ial
n r ow b s tyre for e rth-mo in s rvic , mo ie
cra e , s o els, minin c rs, lo d rs a d d zers
Tyre size d sig atio
12.00 - 2
12.0 - 21
12.0 - 2
12.00 - 2
13.0 -2
13.0 - 2
14 0 - 2
14 0 - 21
14 0 - 2
14 0 - 2
16 0 - 2
16 0 -21
16 0 -2
16 0 - 2
18 0 - 2
18 0 - 2
18 0
- 3
18 0 - 4
21.0 -2
21.0 -2
21.0 - 3
21.0 -4
24.00 - 2
24.00 - 2
24 0 -3
24 0 -4
2 00 -4
27 0 -3
27 0 -4
3 0 -3
3 0 -51
Re omme d d
rims
8 5, 8.5 V, 8 5 5O
8.5 /1.3
8.5, 8.5 V, 8 5 5O
8,5 /1.3
1o.o w
10.0 /1.5
1o.o w
10.0 /1.5
10.0 w
10.0 /1.5
1 25 /2.0
'I 1.2 í2.0
1 ,2 /2.0
1 2 /2.0
13.0012.5
13.0 /2.5
13.0 /2.5
13.0 /2.7
15 0 /3.0
15.0 /3.0
15.0 /3.0
15.0 /3.0
17.0 /3.5
17.0 /3.5
17 0 /3.5
17.0 /3.5
17.0 /3.5
2 0 í4.0
19.5 /4.0
2 0 /4.5
2 0 /4.5
Ta le 6 ) - Re omme d d rims for dia o al a d ra ial
tyre for ro d gra ers')
T yre size d sig atio 2)8 ) I Re omme d d rims4 )
10.0 - 2 TG
12.0 -2 TG
13.0 -2 T G
14 0 -2 T G
16 0 0 - 2 TG
8.0 TG
SD
8.0 TG
SD
8.0 TG SD
1O.OOV S DC
8.0 TG SD
1O.OOV S DC
10.0 V S DC
I
1) T he tyr e a d rim/wh el ma ufa tur er s o ld b c n ulte for
c nfirmatio of th s ita i ty of th tyre/wh el ass mb ly for th
inte d d s rvic e or for th us e of altern tiv rims
2) For radia l tyre s , repla c e th da sh í -1 in th size d sig atio
with "R"
3) "TG" is a d sig atio to b u e toid ntify tyr es mo nte o
SD rims
4 ) See IS0 4 25 0-3 for rimc nto r s
Trang 12O
Ta le7in ic te re omme d d rims for wid b s tyre
Ta le 8 in ic te re omme d d rims for n r ow b s tyre
mo nte o 15Oc nto rs
Ta le 7 - Re omme d d rims for dia o al a d ra ial
wid b s tyre for e rth-mo in , minin a d lo gin
s rvic , mo ie cra e , s o els, minin c rs, lo d rs
a d d zers
Ta le 8 - Re omme d d rims for dia o al a d ra iai
n r ow b s tyre mo nte o 15Oc nto rs
Tyre size d sig atio Re omme d d rims
12.01 3 SD
14.0 1 5
14.0 1 3 SD
17.012.0
17.01 71
15.5 -2
17.5 -2
~
2.5 -2
NOT - The tyr e and rimlwh el ma ufa tur er s s o ld b e c n ulte
for c nfirmatio of th s ita i ty of th tyrelwh el ass mb ly for th
inte d d se rvic
Ta le 9 - Re omme d d rims for dia o al a d ra iai 6
I
37.5 -3
37.5 -3
37.5 -51
3.014.5
3 0 14.5
3 0 /4.5
1) Ma imum 16 P.R or o e st ar (*l
2) Sp cial size d sig atio
NO TE - The tyr e a d rimlwh el ma ufa tur er s s o ld b c n ulte
for c nfirmatio of th s ita i ty of h tyrelwh el as s e mb ly for th
inte d d s ervic e
s rie tyre
Tyre size d sig atio 1) 2) Re omme d d rims
2 /65 -2
19.512.0
2 0 12.0
316 - 2
1) The tyr e a d rimlwh el ma ufa tur er s o ld b c n ulte for
c nfirmatio of th s ita i ty of th tyrelwh el ass mb ly for th
inte d d s rvic e or for th us e of altern tiv rims
2)
For r adial t y re , re la c e th da sh í - in th size d sig atio
with "R"
Se national foreword
Trang 131991
The pr ep r a t io ofthis Br itish St an ar d was entiustedb theAuto mo bi l e
St an ar ds Polcy Commite e (AUE/- tolk ch ical Commite e AUE/4, u po
wh ich the fo l l o w i ng b d ies wer e r epr esent ed:
Agricultura l En ine r s’As ociatio
Au to mo b i l e Asso c i ati o n
Br itish In ust r ial T ru ck Asso ci ati o n
Br itish Pr es ur e Gau g e Ma nufa ct urers’As ociatio
Br itish Ru bbe r Ma nufa cturers’ As ociatio
Bus a d Co ac h C o unc i l
Dep r t ment ofTra nsp r t
F reig t Tr ansp rt Asso c i ati o n
Institute of Road Tra nsp rt En ine r s ( nc)
M o to r Cycle Ind ustr y’s Asso c i ati o n ofG r ea t Brit ain Lt d
M o to r In ust r y R esea rch As ociatio
Nat io al Ty re Distr ib tors’ Asso c i ati o n
R etr ea d Ma nufa ct urers’Asso c i ati o n
Road H au lag e Asso ci ati o n Ltd
Royal Au to mo bi l e Clu b
Society ofMo to r Ma nufa ctur er s a d Tra d ers Lt d