B S I BS*AU
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*SO: PTL
:SUBSEC*3.1 A
91
Lb24669
0249041
BRITISH STANDARD AUTOMOBTTIE SERIES
O
B SAU50:
hX t1 :
Subsection 3.ia
1991
Is0 4m1 : 1988
Tyres and wheels
(Including A mendment 1: 1 990)
(Superseding BS A U 50
part
1
: Subsection
TW-2D
14 pages
Part 1. Tyres
Section 3. Off-the-roadtyres
Subsection 3. l a Specification for narrow
and wide base tyre designations and
dimensions
Pneumatiques e t roues
Reifen und Räder
Partie 1. Pneumatiques
Teil
S ection 3. Pneumatiques pour engins de génie
Abschnitt 3. Geländereifen
civil
Unterabs chnitt 3. l a Normal- und
S ous-section 3. l a Désignations et dimensions
B reitfelgenreifen; B ezeichnungen und Mape
des pneumatiques à base étro ite e t à base
large - S pécifications
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
1. Reifen
:
3 . 1 : 1 989)
BSI
BS AU 50
:
B S*AU *50: PTL
-
Part 1
:
: S UBS EC* 3 . LA
Subsection 3 . l a
:
91
= Lb24bb9
0 2 4 90 4 2 2
W r
a---
1991
National foreword
This S ubsection of this Part of BS AU 50, prepared under the direction of th e
rims -
:
Automobile S tandards Policy Committee, is identical with IS 0 4260-1
‘ Narrow and wide base off-road tyres and
dimensions’ as amended by IS 0 4260-1
:
:
Part 1
1 988/Amd 1
:
1 988
Tyre designation and
1 990 and published by
the International Organization for S tandaidization (ISO). S ubsection 3 . 2 of the
Part deals with tyre loads and inflation pressures. Other Parts of the standard
are:
Part 2 Wheels and rims;
Part 3 Valves,
This edition supersedes BS AU 60 : . Part 1
which is withdrawn.
:
Section 3
:
S ubsection 3 . 1
:
1 989,
Cross-references
The Technical Committee has reviewed the provisions of IS 0 4223 -1 and
IS 0 4260-3, to which reference
is made in th e text,
and has decided that they are
acceptable for use in conj unction with this standard.
:
:
NCEE. The full provisions of IS 0 4260-3
Part 2
Section 1
1 980.
:
1 987
will
be included in a fu tu re revision of
Bs AU
60
:
Compliance with a British Standard does not of itself confer immunity from
legal obligations.
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
%*
-
I
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4
B S AU 50 : Part 1 : Subsection 3 . l a
: 1 991 .
Contents
Page
National foreword
Ins ide fro n t page
Committees res pons ible
B ack page
S pecification
O
Intro duc tio n
1
1
S cope
2
Field of application
3
References
4
Definitions
5
Tyre des ignation
6
Tyredimens i o ns
7
Dual s pacing
8
Recommended
9
Method of meas urement of ty re dimens ions
ri m s
làb les
1
Type of s ervic e
2
Treaddes i g n
3
Tyre dimens ions for narro w b as e ty re s
3a
Tyre dimens ions for narro w bas e ty re s o n SDC rims
4
Tyre dimens ions fo r wide bas e ty re s
5
Dimensions fo r narro w bas e ty re s mo unted o n 15O
5a
Tyre dimens ions for 65 s eri es ty res
6
Recommended
ri m s
rim
c o nto urs
fo r diagonal and radial narro w bas e ty re s for
earth- moving s ervice, mobile c ranes , s hovels , mining cars , loaders
an d dozers
6a
Recommended
7
Recommended rims for diagonal an d radial w ide bas e ty re s fo r
r i m s for diagonal an d radial
tyres fo r road graders
8
8
earth- moving, mining an d logging s ervic e, mobile c ranes , s hovels ,
mining cars , loaders an d dozers
8
Recommended
ri rn s
fo r diagonal and radial narro w b as e tyres
mo unted o n 15O contours
9
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
Recommended
ri m s
9
fo r diagonal an d radial 65 s eries ty re s
9
9
-
k
6 x1
BS*AU *SO: PTL
:SUBSEC*3.LA
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0249044
I N TERNATI ON AL STAN DARD
b
I S 0 4250-1
1 988 ( E )
N a rro w an d wi d e base off-ro ad tyres an d ri ms Part 1 :
O
Tyre designation and dimensions
O
5
Introducti on
Tyre desi gnati on
IS0 4250 provi des techn i cal details o n th e desi gnati on and
The desi gnati on of tyres shall i nclu de th e details i n 5.1 and 5.2;
dimensions of off-road tyres and rims, as well as l oad rati ngs
it may i n clu de those in 5.3.
fo r these types of tyres.
Thi s I n tern ati onal Standard consists of three parts :
5. 1
Part 1 : Tyre designations and dimensions.
Tyres shall be designated by a two-part size marki ng (nomi nal
secti on wi d th - nomi n al ri m diameter code) except as noted i n
Part 2 : Loads and i nflati on pressures.
th e tables.
Part 3 : Rims.
Diagonal ply constru cti on
shall n o t be specially
marked. Radial ply constru cti on shall be i denti fi ed by the l etter
"R"
1
Tyre si ze a n d co n stru cti o n cod e
instead of th e dash,
before the ri m diameter i n th e size
desi gnati on . I n addition, th e word "radial"
Scope
may also appear on
th e tyre.
Thi s Dart of I S 0 4250 sets ou t designations and dimensions fo r
narrow and wi de base off-road t y i s and recommended ri ms.
2
5.2
i n d e x of t y r e s t r e n g t h
The term i s used t o i den ti fy a gi ven tyre wi th i ts maxi mu m
Field of appl i cati on
recommended l oad wh en used i n a specific type of service.
Thi s part of I S 0 4250 applies t o tyres pri mari ly i ntended for offroad machines.
3
5. 3
Other markings may be added, for example as i n 5.3.1 t o 5.3.4.
References
I S 0 4223-1 , Definitions
try - Part
1:
of some terms used in
the tyre indus-
Pneumatic tyres.
I S 0 4250-3, Narrow and wide base off-road tyres and rims
Part 3: Rims.
4
Defi ni tions
For defi n i ti ons of terms relati n g t o tyres, see I S 0 4223-1 .
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
O th er m arki n g s
-
5.3.1
P re fe rre d d i recti o n o f r o t a t i o n
The marki ng to i ndi cate the preferred di recti on of rotati on shall
be an arrow.
5. 3. 2
Tu bel ess t yre s
Tyres shall be marked "TUBELESS",
i f applicable.
1
I S 0 4250-1 : 1 988 ( E )
5.3.3
5.3.4
C o d e s ys t e m fo r t yre u sag e
Sem i -d ro p ce n t re ri m s
Tyres may be i den ti fi ed by thei r type of servi ce and tread design
"TG"
as i ndi cated i n tables 1 and 2 respectively.
centre (SDC) ri ms (see I S 0 4250-3).
Tabl e 1
-
shall be used to i d en ti fy tyres mou nted on semi -drop
Type of servi ce
Servi ce code
Type of service
C
Com pactor
E
Earth -m ovi n g (du m per an d
6
Tyre di mensi ons
Tyre di mensi ons shall be as l i sted :
tractor-scraper)
G
Grader
L
NOTE
-
Loader
The use o f these i den ti fi cati on codes i s at th e di screti on o f tl
i n di vi du al tyre m an u factu rer.
Tabl e 2
-
7
on SDC ri m s.
Table 4 :
Wide base tyres.
Table 5 :
N arrow base tyres on 1 5'
Table 5a :
65 series tyres.
ri m con tou rs.
Du al spaci ng
wi d th x 1 ,2.
G rooved
E-I
Ri b
E-2
Tracti on
E-3
Rock
E-4
Rock (deep tread)
E-7
Fl otati on
8
Recom m en d ed ri ms
Recommended ri ms are given as fo l l o ws :
G-I
Ri b
G-2
Tracti on
Table 6 :
G-3
Rock
Table 6a :
Di agonal and radi al tyres fo r road graders,
L-2
Tracti on
Table 7 :
Wide base tyres.
N arrow base tyres.
L-3
Rock
Table 8 :
N arro w base tyres on 1 5'
L-4
Rock (deep tread)
Table 9 :
Di agonal and rad i al 65 series tyres.
L-5
Rock (extra deep tread)
9
NOTES
Th e use o f these i den ti fi cati on codes i s at th e di screti on of th e
i n di vi du al tyre m an u factu rer.
Wh ere sm ooth treads are used i n th e "L" series,
den oted b y th e su ffi x "S"
2
base tyres
Recommended m i n i m u m dual spacing sh al l be design secti on
Sm o o th
c- 2
3
N arrow
Tread type
c- 1
2
N arro w base tyres.
Tread d esi g n
Code
1
Table 3 :
Table 3a :
of tyre
di mensi ons
Befóre measuring, tyres shall be mou n ted on a measuring ri m,
th i s sh ou l d be
( fo r example, L-5S) .
Code types 1 , 2 and 3 are designated as norm al tread depth .
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
M eth o d of m easu rem en t
co n to u r rims.
i n fl ated t o th e recommended pressure, and all owed t o stand fo r
a m i n i m u m of 24 h at n ormal room temperature, after wh i ch
th e i n fl ati on pressure shall be readjusted t o the ori gi nal value.
BS I
BS*AU*SO:PTL
: SU BSEC*3n LA 9 1
1 6 2 46 6 9 02490 46
T
I S 0 4250-1
Tabl e 3
Tyre size
designation
12.00 - 20, 21
12.00 - 24, 25
13.00 - 24, 25
14.00 - 20, 21
14.00 - 24, 25
16.00 - 20, 21
16.00 - 24, 25
18.00 - 24, 25
18.00 - 33
18.00 - 49
21.00 - 24, 25
21.00 - 35
21.00 - 49
24.00 - 25
24.00 - 29
24.00 - 35
24.00 - 43
24.00 - 49
27.00 - 33
27.00 - 49
30.00 - 33
30.00 - 51
33.00 - 51
36.00 - 51
37.00 - 57
40.00 - 57
I
I
I
1
I
Measuring ri m
width
Code
8.50
8.50
?O.OO
10.00
11.25
11.25
13.00
13.00
13.00
15.00
15.00
15.00
1 7.00
1 7.00
1 7.00
17.00
17.00
22*oo
1 9.50
22.00
22.00
24.00
26.00
27.00
29.00
-
Design new tyrel l
Section
Overall
wi dth
diameter31
315
1 1 46
315
1 247
351
I
1 301
II
375
I
I
1 988 ( E )
Tyre d i m en si o n s fo r n a r r o w base tyres
I
I
:
432
498
498
498
571
57 1
57 1
653
653
653
653
653
1
762
737
823
823
894
988
1 01 6
1 097
I
1 368
266
1 391
493
1 61 5
1 81 8
2 227
1 750
2004
2 360
1 875
1 975
2 127
2 331
2483
2242
2649
2 389
2846
2 997
3 1 65
3 370
3 526
II
Dimensions in millimetres
In-service2J
I
Maximum overall Maximum overall
width
diameters)
340
340
379
405
405
480
480
553
553
553
634
634
634
725
725
725
725
725
846
818
914
914
992
097
1118
1 21 8
I
I
I
1
?
1 342
1 413114
l1 561
m
1 693
2 306
1 839
2 093
2449
1 974
2 074
2 226
2 430
2 582
2354
2 761
II
I
I
4
3 315
3 524
3 692
1
1
I
I
2) In-service dimensions are the maximum dimensions for grown tyres in-service for use by machine manufacturers in designing for tyre clearances.
Max. overall width = design new tyre section width (S.W.) x (1 tolerance)
Tolerances: S.W. < 380 mm: 8 %
> 380mm: 11 %
Max. overall diameter = (design new tyre overall diameter - rim diameter) x (1 tolerance) rim diameter
Tolerances: S.W. < 380 mm: + 6 %
> 380mm: + 8 %
NOTE - See IS0 4250-3 for rim diameter values.
3) Figures are based on tyres with normal tread depth. The machine manufacturer should recognize that tyres with deep tread and corresponding
increased overall diameter may be used.
++
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
+
+
+
3
.
B S I
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91
:SUBSEC*3.LA
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0 2 4 90 4 7 1 I
I
I S 0 4250-1 : 1 988 ( E )
-
Ta b l e 3 a )
Tyre d i m en si o n s fo r n a r r o w base t yre s o n SDC ri m s
Dimensions i n m i l l i m etres
Measuring rim
Tyre si z e
wi d th
designation l J r * )
Design n ew tyre3)
Section
Code
I
wi d th
In-service51
OveraI I
Maxi mum overall
diameters)
wi dth
I
Maxi mu m overall
diameter41
1 0.00 - 24 TG
8, 00
283
1 1 51
306
1 2.00 - 24 TG
8. 00
31 2
1 226
337
1 263
1 3.00 - 24 TG
8. 00
333
1 278
360
1 31 8
1 1 84
1 4.00
-
24 TG
8.00
362
1 348
39 1
1 392
1 6.00
-
24 TG
1 0.00
427
1 459
474
1 527
1)
For radi al tyres, replace th e dash í
2)
"TG"
-1
i n th e size desi g n ati on wi th "R".
is a desi g n ati on t o be used t o i den ti fy tyres m ou n ted o n SDC ri m s.
3)
Design n ew tyre dimensions qu oted i n th e tables are used fo r tyre desi g n purposes on l y.
4)
Figures are based o n tyres wi th n orm al tread depth . Th e m ach i n e m anu factu rer sh ou l d recognize th at tyres wi th deep tread an d correspon d-
i n g increased overal l diameter may be used.
5)
I n -servi ce dimensions are th e m axi m u m di m en si on s fo r g ro wn tyres i n -servi ce fo r use by m ach i n e m an u factu rers i n desi g n i n g fo r tyre
clearances.
Max. overal l wi d th = [desi g n new tyre secti on wi d th (S. W. ) I x
Tol eran ces: S. W.
< 380 m m :
>
380m m:
+
+
<
>
380 m m :
380m m :
+
+
4
tol eran ce)
11 %
6 %
8 %
NOTE - See I S 0 4250-3 fo r ri m di am eter values.
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
+
8 %
Max. overall diameter = (desi g n n ew tyre overal l diameter
Tol eran ces: S.W.
(1
-
ri m di am eter) x
(1
+
tol eran ce)
+
ri m diameter
J
BS * AU* S O: P T L
B S I
I
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: SU B SE C *~ . ~ I A
91
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02490 48
3 =
I S O 4250-1
:
1 988
( E)
Tabl e 4 - Tyre d i m en si o n s fo r wi d e base tyres
Di m en si on s i n m i l l i m e tre s
Measuring ri m
Tyre size
designation
1 5. 5
-
1 7.5
20.5
Section
Code
wi dth
394
- 25
1 4.00
- 25
1 7. 00
I
I
I
In-service21
Overall
Maximum overall
Maximum overall
diameters)
wid th
diameters)
1 277
437
1 328
445
1 348
494
1 405
520
1 492
577
1
I
I
1
561
23.5
- 25
26.5
- 25
22.00
747
1 839
26.5
-
29
22. 00
747
1 940
29. 5
-
25
25.00
1 873
29.5
-
29
25.00
1 975
29.5
-
35
25. 00
2 1 27
33.25
-
29
33.25
-
35
1 9.50
27. 00
I
- 33
28.00
33.5
-
28.00
39
-
I
27.00
33.5
35
31
597
1 61 7
I
845
845
850
850
.O0
663
833
833
833
1 696
1 972
2 074
2 226
I
2 1 98
2242
938
2 242
944
2 354
2 395
944
2 507
2350
946
2389
1 o50
2509
37.5
- 33
32.00
952
2389
1 057
2 51 3
37.5
-
32.00
952
2 541
1
O57
2 665
37.5
- 51
2846
1 057
2 970
40.51 75
2)
25
wi d th
1 2.00
37.25
I)
Design n ew tyre’ )
39
- 3941
I
32.00
952
32.00
1 o29
I
2 581
I
1
1 42
2 708
Desi gn n e w tyre di m en si on s q u o te d i n the tabl es are u sed f o r tyre desi g n pu rposes on l y.
I n - se rvi ce di m en si on s are th e m axi m u m di m en si on s f o r g ro wn tyre s i n -servi ce f o r use by m ach i n e m an u factu re rs i n d e si g n i n g fo r tyre cl earan ces.
M ax.
ove ral l wi d t h
To l e ran ce s:
M ax.
=
S. W.
ove ral l di am eter
To l e ran ce s:
S.W.
d e si g n n e w tyre secti o n wi d t h
(S. W. )
< 380 m m :
+
8 %
>
3û û m m:
+
11
=
(d e si g n n e w tyre o ve ral l di am eter
<
380
mm:
+
x
(1
+
to l e ran ce )
%
- ri m d i am e te r)
x
(1 +
to l e ran ce )
+
ri m di am eter
6 %
> 3 8 0 m m : + 8 %
N OTE
3)
-
See
IS0
4250-3 f o r ri m di am eter values.
Fi g u res are based o n tyre s wi t h n o rm al tre ad d e pth .
Th e m ach i n e manufactu!er
sh o u l d recog n i ze th at tyre s wi t h
deep tre ad an d co rre spo n d i n g
i n creased overal l di am eter m ay b e used.
I
4)
Speci al size d e si g n ati o n .
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
5
-
!
BSI BS*AU*50: PTL
-
IS0
4260-1 1988 (E)
-
:SUBSEC*3.LA 9% I 3rb24bb9 02490
I:*
5
r.
:
e
Table 6 - Dlmenslons for narrow base tyres mounted on 1 6O rim contours
I
Tyre si z e
d eal g n ati on
width
Code
M eesu i l n g
66.6
33 69.6
- 59.5
39 69.6
Deslgn
30
-
36
-
11
21
853
diameter3)
2483
808
899
2846
2 997
3
166
o ve ral l
998
I
mllilmetres
I n aervi ca2i
width
726
818
097
2649
973
I
Maxlmum
Overall
737
tebles
Dimenslgns i n
tyrefl
wi d t h
new tyre dimensions quoted I n the
1 080
Menirnurn
overall
diarnetter3)
2682
2 761
2 970
3
1 33
3 31 6
are ueed for tyre design purposes only,
in-service dlmansions are the maximum dimensions for grown tyres in-setvlce for use by machine manufacturersI n deeigning for tyre clearances,
Max. overall wi dth
Tolerances:
= design new tyre sectlon wi dth
S.W.
<
>
Mex. overall diameter =
Tolerances:
380 mm:
8 46
380mm: 11
NOTE
-
See I C 0
K3.W.)
+
II
t
tolerance)
%
(design new tyre overall diameter
<
4250-3 for
x
+
SaW. 380mm: + 8
380mm: f 8 %
>
31
Design n e w
Secti on
23.60
27.00
27.00
-
I
rim
-
rim diameter)
x (1
f
tolerance1
+
rim diameter
%
rlm
diameter vsIueB.
uwd.
Figures are based on tyrea wi th normal tread depth. The machine manufecturershould recognize that tyres wi th deep tread and corresponding
Increased overall diameter may be
6
Copyright by the British Standards Institution
Fri Feb 11 10:29:30 2000
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
,.
BS I
c
BS*AU *SO: PTL
: S UBS EC* 3 . 1 A 91
162 4 669
0249050
1
i
I S 0 4250-1 : 1 988 ( E )
Tabl e 5 a ) - Tyre d i m en s i o n s fo r 65 seri es t yre s
Di m en si on s i n m i l l i m etres
M e as u ri n g r i m
Desi g n n e w tyre * )
I n - s e rvi c e 4 i
Ty re s i z e
d es i g n ati o n 1 )
wi d th
Secti o n
O ve ral l
M a x i m u m o ve ra l l
M a x i m u m o ve ra l l
Code
wi d th
d i am e te r3 )
wi d th
d i am e te rs )
25/65 - 25
20.00
635
1 486
301 65 - 25
24.00
762
1 656
705
1 554
29
24.00
762
1 758
- 33
28.00
889
846
846
2 029
987
401 65 - 39
32.00
1 01 6
2 352
1 1 28
2 461
45
36.00
1 1 43
2 675
1 269
2 798
501 65 - 51
40.00
1 270
2 997
1 41 0
3 1 33
301 65
35/65
4 5 /6 5
-
-
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
1 738
1 840
2 1 24
7
IS0
4250-1
1 988 ( E )
T a b l e 6 i n d i c a t e s re c o m m e n d e d r i m s f o r n a r r o w bas e tyre s .
Ta b l e
6a)
-
Recom m en d ed
t yres
Ta b l e
6
-
n arro w
Recom m en d ed
base t yre s
cran es,
sh ovel s,
fo r
ri m s f o r
mining
cars,
8.5,
1 2.00 - 21
8. 50/1 . 3
1 2.00 - 24
8.5, 8.50V,
1 2.00 - 25
8, 50/1 . 3
1 3.00 - 24
1 o.oow
1 3.00 - 25
1 0.00/1 .5
-
8.50V,
1 0. 00/1 . 5
1 4.00 - 24
1 0.00w
-
1 6.00 - 20
1 1 .25/2.0
'I 1 . 25í2. 0
1 6.00 - 24
1 1 , 25/2. 0
1 6.00 - 25
1 1 . 25/2. 0
1 8.00 - 24
1 3.001 2.5
1 8.00 - 25
1 3. 00/2. 5
1 8.00 - 33
1 3. 00/2. 5
1 8.00 - 49
1 3. 00/2. 75
21 .00 - 24
1 5.00/3.0
21 .00 - 25
1 5. 00/3. 0
21 .00 - 35
1 5. 00/3. 0
21 .00 - 49
1 5. 00/3. 0
24.00 - 25
1 7. 00/3. 5
24.00 - 29
1 7. 00/3. 5
24.00 - 35
1 7.00/3.5
24.00 - 43
1 7. 00/3. 5
24.00 - 49
1 7. 00/3. 5
27.00 - 33
22. 00í4. 0
27.00 - 49
1 9. 50/4. 0
-
33.00
-
36.00
37.00
24. 00/5. 0
-
51
26.00/5.0
-
57
27. 00/6. 0
40.00 - 57
29.00/6.0
8.5V5O
The tyre and ri rn /wh eel m an u factu rers sh ou l d be con su l ted
fo r con fi rmati on
of
th e su i tabi l i ty
i n ten ded service.
8
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
of
d i ag on al
an d
I
Reco m m en d ed
ra d i a l
ri m s4)
1 0.00 - 24 TG
8 . 0 0 TG
SDC
1 2.00 - 24 TG
8 . 0 0 TG
SDC
-
8. 0 0 TG
SDC
1 3.00
8.5V5O
22. 00/4. 5
51
d esi g n ati o n 2 ) 83 )
ri m s fo r
ro a d g ra d e rs ' )
ri m s
22. 00/4. 5
33
30.00 - 51
Tyre si ze
d o zers
1 0. 00/1 . 5
25
1 6.00 - 21
30.00
ra d i a l
m obi l e
1o.oow
20
1 4.00 - 21
1 4.00
-
l o a d e rs a n d
1 2.00 - 20
1 4.00
an d
servi ce,
Reco m m en d ed
Tyre si ze d e s i g n ati o n
NOTE
d i ag on al
eart h - m o vi n g
fo r
th e tyre/wh eel assembly fo r th e
1)
24 TG
1 4.00
-
24 TG
1 6.00
-
24 TG
I
1 O.OOVA
SDC
8 . 0 0 TG
SDC
1 O.OOVA
SDC
1 0. 00VA
SDC
Th e tyre an d ri m /wh eel m an u factu rer sh ou l d be con su l ted fo r
con fi rm ati on o f th e su i tabi l i ty of th e tyre/wh eel assembly fo r th e
i n tended service or fo r th e use o f al tern ati ve ri m s.
2)
wi th
3)
For radial tyres,
"R".
"TG"
is
replace th e dash í
See
1 i n th e size desi g n ati on
a desi g n ati on t o be used t o i d e n ti fy tyres m ou n ted o n
SDC rims.
4)
-
I S0
4250-3 fo r ri m con tou rs.
I S 0 4250-1 : 1 988 ( E )
O
T a b l e 7 i n d i c a t e s re c o m m e n d e d r i m s f o r w i d e bas e tyre s .
Tab l e 8 i n d i cate s re co m m e n d e d
ri m s f o r
n a r r o w base t y re s
m o u n t e d o n 1 5 O c o n t o u rs .
Tabl e 7 - R e co m m e n d e d ri m s for d i ag on al a n d rad i al
w i d e bas e tyres for earth -m ovi n g ,
Tabl e 8
m i n i n g an d l og g i n g
-
R e co m m e n d e d ri m s for d i ag on al a n d rad i ai
n a r ro w base tyres m o u n t e d o n 1 5 O co n to u rs
servi ce, m o bi l e cran es, sh ovel s, m i n i n g cars, l oad ers
a n d d o zers
Tyre si ze d e s i g n ati o n
-
R eco m m en d ed ri m s
27 - 56.5
20.0
30 - 56.5
22.0
12.0011.3
15.5 - 25
17.5
Tyre si ze d e s i g n ati o n
R eco m m en d ed ri m s
12.0011.3 SDC
14. 0011.5
25
14. 0011.3 SDC
17.0011.711
23.5 - 25
25
22.0013.0
26.5
-
29
22.0013.0
29.5 - 25
25.0013.5
29.5 - 29
25.0013.5
29.5 - 35
25.0013.5
33.25 - 29
27.0013.5
33.25 - 35
27.0013.5
33
28.0014.0
33. 5 - 39
28.0014.0
37.25 - 35
31.0014.0
-
32.0014.5
37. 5
I
33
37. 5 - 39
32.0014.5
37. 5 - 51
32. 00/4. 5
40.5175 - 392'
I
1)
M axi m u m 16 P. R. or on e star ( * l .
2)
Special size desi g n ati on .
NOTE - The tyre and ri m l wh e e l m an u factu rers sh ou l d be con su l ted
32. 0014.5
Tabl e 9
I
NOTE - The tyre an d ri m l wh e e l m an u factu rers sh ou l d be con su l ted
Publication(s) referred to
national foreword.
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
R e co m m e n d e d ri m s fo r d i ag on al a n d rad i ai 65
Tyre s i z e d e s i g n a t i o n
R e co m m e n d e d ri m s
1 ). 2)
19.5012.0
25/65 - 25
I
.
i n ten ded service.
-
seri es tyres
fo r con fi rmati on of th e su i tabi l i ty of th e tyrel wh eel assembly fo r th e
See
27.0
i n ten ded service.
-
-
27.0
59. 5
-
fo r con fi rmati on o f th e su i tabi l i ty of th e tyrel wh eel assembly fo r th e
19.5012.5
26.5
33. 5
36 - 59.5
17.0012.0
20.5 - 25
I
23.5
39
~
-
59.5
33
1)
20. 0012.0
30165 - 25
1
24. 0013.0
30165 - 29
1
24. 0013.0
35/65 - 33
1
28. 00i3. 5
40165
-
39
1
32.0014.0
45/65
-
45
36.0014.5
50165 - 51
40.0014.5
The tyre an d ri m l wh e e l m an u factu rer sh ou l d be con su l ted fo r
con fi rm ati on o f th e su i tabi l i ty of th e tyre l wh e e l assembly fo r th e
i n tended service or fo r th e use of al tern ati ve rims.
2)
For radi al tyres, replace th e dash í -
wi th "R".
i n th e size desi g n ati on
BSAU50:
RW t1 :
Subsection 3 . h :
1991
Tso am 1 : 1988
Committees responsible for this
British Standard
The preparation of this B ritish S tandard was entius ted by t h e Automobile
S tandards Policy Committee (AUE/-) to lkchnical 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.
Royal Automobile Club
S ociety of Motor Manufacturers and Traders Ltd.
This B ritish S tandard,
having
been prepared under t h e
direction of th e Automobile
Amendments issued since publication
S tandards Poiicy Committee,
was published under t h e
authority of t h e S tandards B oard
AmdeNo *
I
Date
I
ll?xt
affected
and comes into effect o n
30 August 1 991
O BSI 1 991
I
The foliowing BSI references
l
relate t o the work on this
standard:
Committee reference AUE14
Drafts for comment 861 771 83 DC
and 891 78926 DC
ISBN
91 08-
O 680 19920 7
5-
0.86k-
B
Reprodu ced by I H S u n d er l i cen se wi th BSI - U n con trol l ed Copy
B SI ,
2 Park Street, London W1A
PW-2D-14
2BS
BSI, Linford Wood, Milton Keynes MK14 6LE
AUE14