Bsi bs au 050 4 5 1 1995 (1999)

BRITISH STANDARD AUTOMOBILE SERIES

Tyres and wheels —
Part 4: Rim profiles and dimensions —
Section 5 : Industrial vehicle rims —
Subsection 5.1 Specification for rim
profiles and dimensions for
code-designated series tyres

BS AU
50-4.5 .1 :1 995


BS AU 50-4.5 .1 :1 995

Committees responsible for this
British Standard

The preparation of this British Standard was entrusted to Technical
Committee AUE/4, Tyres and wheels for road vehicles, upon which the
following bodies were represented:
Agricultural Engineers’ Association
Automobile Association
British Industrial Truck Association
British Pressure Gauge Manufacturers’ Association
British Rubber Manufacturers’ Association
Confederation of Passenger Transport UK
Department of Transport
Freight Transport Association
Institute of Road Transport Engineers (Inc)
Motor Cycle Industry’s Association of Great Britain Ltd.

Motor Industry Research Association
National Tyre Distributors’ Association
Retread Manufacturers’ Association
Road Haulage Association Ltd.
Society of Motor Manufacturers and Traders Ltd.

This British Standard, having
been prepared under the
direction of the Engineering
Sector Board, was published
under the authority of the
Standards Board and comes
into effect on
1 5 April 1 995
© BSI 09- 1 999

The following BSI references
relate to the work on this
standard:
Committee reference AUE/4
Draft for comment 94/702520 DC

ISBN 0 5 80 23721 4

Amendments issued since publication

Amd. No.

Date

Comments


BS AU 50-4.5 .1 :1 995

Contents

Page
Committees responsible

Inside front cover

Foreword

ii

1

Scope

1

2

References

1

3

Definitions

1

4

Designation and marking

1

5

Rim profiles

1

Annex A (normative) Ball tape and mandrel dimensions
for verifying specified rim diameter

8

Figure 1 — Rims with 5 ° tapered bead seat

2

Figure 2 — Divided rims

4

Figure 3 — Flat base rims

5

Figure 4 — Drop- centre 1 5 ° tapered rims for normal base tyres

6

Figure A. 1 — Use of ball tape to measure rim circumference

8

Table 1 — Rims with 5 ° tapered bead seat rims: contour dimensions

2

Table 2 — Rims with 5 ° tapered bead seat: size programme

3

Table 3 — Divided rims: rim contour dimensions

4

Table 4 — Divided rims: size programme

4

Table 5 — Flat base rims: rim contour dimensions

5

Table 6 — Flat base rims: size programme

5

Table 7 — Drop- centre 1 5 ° tapered rims for normal base tyres:
rim contour dimensions

7

Table 8 — Drop- centre 1 5 ° tapered rims for normal base tyres:
size programme

7

Table A. 1 — Ball tape and mandrel dimensions

9

List of references

© BSI 09- 1 999

Inside back cover

i


BS AU 50-4.5 .1 :1 995

Foreword

This British Standard has been prepared by Technical Committee AUE/4. This
Subsection forms part of Section 5 of this British Standard. This Subsection
specifies rim profiles and dimensions suitable for use with the code- designated
series tyres specified in BS AU 50- 1 . 5. 1 .
Requirements for rims for metric series tyres are specified in the other
Subsections of Section 5.
Part 4 of this standard is concerned with rim profiles and dimensions. Other
Parts are as follows:
— Part 1 : Tyres ;
— Part 2: Wheels and rims ;
— Part 3: Valves .
Other Sections of Part 4 are as follows:
— Section 1 : Passenger car rims ;
— Section 2: Commercial vehicle rims ;
— Section 3: Off-the- road vehicle rims ;
— Section 4: Agricultural vehicle rims ;
— Section 5: Industrial vehicle rims ;
— Section 6: Motor cycle rims ;
— Section 7: Moped rims .
A British Standard does not purport to include all the necessary provisions of a
contract. Users of British Standards are responsible for their correct application.
Compliance with a British Standard does not of itself confer immunity
from legal obligations.

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii,
pages 1 to 1 0, an inside back cover and a back cover.

This standard has been updated (see copyright date) and may have had
amendments incorporated. This will be indicated in the amendment table on the
inside front cover.

ii

© BSI 09- 1 999


BS AU 50-4.5 .1 :1 995

1 Scope

4 Designation and marking

This Subsection of BS AU 50- 4 specifies contours

Rims shall be designated and marked in accordance

and dimensions of rims for use with code- designated

with BS AU 50- 2. 0: 1 979.

series tyres used on industrial vehicles.
Requirements for such tyres are specified in
BS AU 50- 1 . 5. 1 : 1 994. Requirements for rim
construction and workmanship are specified in
BS AU 50- 2. 0: 1 979.
SAFETY NOTE. The wheel manufacturer should
also be consulted to determine whether the rim and

wheel is of sufficient strength for the intended
service. In particular, care should be taken to
ensure that the wheel will withstand the maximum
pressure of any tyre that can be fitted in accordance

5 Rim profiles
5.1 Rims with 5 ° tapered bead seat

Rims with 5 ° tapered bead seat rim profiles shall be
in accordance with Figure 1 and Table 1
and Table 2. The specified rim diameter shall be
verified by measuring the wheel rim circumference
with a ball tape. The measured circumference shall
be within ± 1 . 2 mm of the nominal circumference of
the appropriate mandrel, as specified in Annex A.

with BS AU 50- 1 . 5. 1 : 1 994. This pressure may

5.2 Divided rims

exceed 1 000 kPa (1 0 bar) for both diagonal and

Divided rim profiles shall be in accordance

radial tyres.

with Figure 2 and Table 3 and Table 4. The specified

2 References

wheel rim circumference with a ball tape. The

2.1 Normative reference

This Subsection of BS AU 50- 4 incorporates, by
dated or undated reference, provisions from another

rim diameter shall be verified by measuring the
measured circumference shall be within ± 1 . 2 mm
of the nominal circumference of the appropriate
mandrel, as specified in Annex A.

publication. This normative reference is made at the

5.3 Flat base rims

appropriate places in the text and the cited

Flat base rim profiles shall be in accordance

publication is listed on the inside back cover. For

with Figure 3 and Table 5 and Table 6.

dated references, only the edition cited applies; any
subsequent amendments to or revisions of the cited
publication apply to this Subsection of BS AU 50- 4

5.4 Drop-centre 1 5 ° tapered rims for normal
base tyres

only when incorporated by amendment or revision.

Drop- centre 1 5 ° tapered rim profiles for normal base

For undated references the latest edition of the cited

tyres shall be in accordance with Figure 4

publication applies, together with any amendments.
2.2 Informative reference

This Subsection of BS AU 50- 4 refers to another
publication that provides information or guidance.
The edition of this publication current at the time of
issue of this standard is listed on the inside back

and Table 7 and Table 8. The specified rim diameter
shall be verified by measuring the wheel rim
circumference with a ball tape. The measured
circumference shall be within ± 1 . 2 mm of the
nominal circumference of the appropriate mandrel,
as specified in Annex A.

cover, but reference should be made to the latest
edition.

3 Definitions
For the purpose of this Subsection of BS AU 50- 4
the definitions given in BS AU 50- 2. 0: 1 979 apply.

© BSI 09- 1 999

1


BS AU 50-4.5 .1 :1 995

Figure 1 — Rims with 5 ° tapered bead seat
Table 1 — Rims with 5 ° tapered bead seat rims: contour dimensions
D imensions in millimetres

Rim contour

A

G

designation

B

min.

P

C

min.

R

R

1

R

2

3. 00 D

76. 2

1 7. 5

11.5

1 4. 2

1 2. 4

1 3. 0

4. 3

8. 1

4. 00 E

1 01 . 6

1 9. 8

11.7

2 8. 0

1 3. 6

1 4. 2

6. 4

8. 6

5. 0

1 2 7. 0

2 7. 9

1 5. 7

36. 3

—

1 4. 0

—

8. 0

5. 00 F

1 2 7. 0

22. 2

1 2. 2

2 3. 8

1 4. 5

1 5. 6

6. 4

9. 5

5. 00 S

1 2 7. 0

31 . 3

1 8. 3

43. 0

—

1 8. 3

8. 0

—

5. 5

1 39. 7

30. 6

1 7. 0

36. 3

—

1 5. 2

—

8. 0

5. 50 F

1 39. 7

22. 2

1 2. 2

34. 0

1 4. 5

1 5. 6

6. 4

9. 5

6. 0

1 52 . 4

33. 0

1 8. 3

36. 3

—

1 6. 5

—

8. 0

6. 00 E

1 52 . 4

1 9. 8

11.7

2 8. 0

1 3. 6

1 4. 2

6. 4

8. 6

6. 5

1 65. 1

35. 6

1 9. 6

36. 3

—

1 7. 1

—

8. 0

B6. 5

1 65. 1

38. 1

2 0. 8

2 7. 3

—

1 9. 0

—

8. 0

6. 50 F

1 65. 1

22. 2

1 2. 2

34. 0

1 4. 5

1 5. 6

6. 4

9. 5

7. 0

1 77. 8

38. 1

2 0. 8

36. 3

—

1 9. 0

—

8. 0

B7. 0

1 77. 8

38. 1

2 0. 8

2 7. 3

—

1 9. 0

—

8. 0

7. 5

1 90. 5

40. 6

22. 1

36. 3

—

2 0. 3

—

8. 0

B7. 5

1 90. 5

43. 2

2 3. 4

2 7. 3

—

21. 6

—

8. 0

—

8. 0

2 03. 2

43. 2

2 3. 4

36. 3

—

21. 6

B8. 0

2 03. 2

43. 2

2 3. 4

2 7. 3

—

21. 6

8. 00 G

2 03. 2

2 7. 9

1 4. 0

40. 6

—

1 4. 0

7. 5

—

8. 5

2 1 5. 9

45. 7

2 4. 6

36. 3

—

22. 9

—

8. 0

—

B8. 5

2 1 5. 9

45. 7

2 4. 6

2 7. 3

—

22. 9

1 0. 0

2 54. 0

50. 8

2 7. 2

36. 3

—

2 7. 0

2

3

max.

8. 0
8. 0

8. 0
8. 0

© BSI 09- 1 999


BS AU 50-4.5 .1 :1 995

Table 2 — Rims with 5 ° tapered bead seat: size programme
D imensions in millimetres

Nominal rim diameter code
Rim contour

8

designation

9

10

12

Specified rim diameter

15

20

24

D

3. 00 D

2 02 . 4

—

—

—

—

—

—

4. 00 E

—

2 2 7. 8

—

—

—

—

—

5. 0

—

—

—

—

387. 4

51 4. 4

61 6. 0

5. 00 F

—

—

2 53. 2

—

—

—

—

5. 00 S

—

2 32 . 6

—

308. 8

—

—

—

5. 5

—

—

—

—

387. 4

51 4. 4

61 6. 0

5. 50 F

—

—

2 53. 2

—

—

—

—

6. 0

—

—

—

—

387. 4

51 4. 4

61 6. 0

6. 00 E

—

2 2 7. 8

—

—

—

—

—

6. 5

—

—

—

—

387. 4

51 4. 4

61 6. 0

B6. 5

—

—

—

—

385. 8

51 2 . 8

—

6. 50 F

—

—

2 53. 2

—

—

—

—

7. 0

—

—

—

—

387. 4

51 4. 4

61 6. 0

B7. 0

—

—

—

—

385. 8

51 2 . 8

—

7. 5

—

—

—

—

387. 4

51 4. 4

61 6. 0

B7. 5

—

—

—

—

385. 8

51 2 . 8

—

8. 0

—

—

—

—

387. 4

51 4. 4

61 6. 0

B8. 0

—

—

—

—

385. 8

51 2 . 8

—

8. 00 G

—

—

—

304. 0

—

—

—

8. 5

—

—

—

—

—

51 4. 4

61 6. 0

B8. 5

—

—

—

—

—

51 2 . 8

—

1 0. 0

—

—

—

—

—

51 4. 4

61 6. 0

© BSI 09- 1 999

3


BS AU 50-4.5 .1 :1 995

Figure 2 — Divided rims
Table 3 — Divided rims: rim contour dimensions
D imensions in millimetres

A

Rim contour
designation

2. 1 0

G

53. 3

B

11.9

C

8. 0

7. 0

P
11.5

R
7. 0

R

1

3. 2

R

2

R

3

—

—

2 50 C

63. 5

1 6. 0

1 0. 4

11.5

11.0

12. 0

3. 2

3. 5 min.

—

3. 00 D

76. 2

1 7. 5

11.5

1 2. 4

1 4. 2

1 3. 0

4. 5

8. 1

—

3

I

82 . 5

1 5. 8

9. 7

—

—

8. 9

4. 3

—

7. 9

I

95. 2

1 5. 8

9. 7

—

—

8. 9

4. 3

—

7. 9

3

!

#

8

4. 33 R

1 1 0. 0

2 7. 8

21 . 5

—

34. 0

1 8. 0

6. 4

—

1 2. 0

5. 00 F

1 2 7. 0

22. 2

12. 2

1 4. 5

2 3. 8

1 5. 6

6. 4

9. 5

1 2. 0

5. 00 S

1 2 7. 0

31 . 3

1 8. 3

—

43. 0

1 8. 3

8. 0

—

1 5. 8

Table 4 — Divided rims: size programme
D imensions in millimetres

Nominal rim diameter code
Rim contour

4

designation

8

12

Specified rim diameter

D

2. 1 0

1 00. 8

—

—

2 . 50 C

1 00. 8

2 02 . 4

—

3. 00 D

—

2 02 . 4

—

3

I

—

2 02 . 4

—

I

—

2 02 . 4

—

4. 33 R

—

2 05. 1

—

5. 00 F

—

2 05. 1

—

5. 00 S

—

—

308. 8

3

4

!
#

© BSI 09- 1 999


BS AU 50-4.5 .1 :1 995

Figure 3 — Flat base rims
Table 5 — Flat base rims: rim contour dimensions
D imensions in mm

A

Rim contour

G

B

P

min.

designation

R

min.

R

1

2

max.

3. 1 1 F

79. 0

22. 0

1 2. 2

2 5. 0

1 6. 0

5. 5

3. 75 P

95. 2

2 5. 4

1 9. 1

2 5. 0

1 6. 0

6. 4

4. 33 R

1 1 0. 0

2 8. 6

21 . 5

34. 0

1 8. 0

6. 4

6. 00 S

1 52 . 4

33. 3

1 8. 3

45. 0

1 8. 3

6. 4

Table 6 — Flat base rims: size programme
D imensions in millimetres

Nominal rim diameter code
Rim contour

8

designation

12

13

Specified rim diameter

D

3. 1 1 F

—

330. 2

—

3. 75 P

—

330. 2

—

4. 33 R

2 02 . 4

—

381 . 0

6. 00 S

—

—

381 . 0

© BSI 09- 1 999

5

Figure 4 — Drop-centre 1 5 ° tapered rims for normal base tyres

BS AU 50-4.5.1 :1 995

6
© BSI 09- 1 999


BS AU 50-4.5 .1 :1 995

Table 7 — Drop-centre 1 5 ° tapered rims for

Table 8 — Drop-centre 1 5 ° tapered rims for

normal base tyres: rim contour dimensions

normal base tyres: size programme

D imensions in millimetres

A

Rim contour
designation

±

3. 2

P
min.

L
min.

Q
max.

H
a

min.

h

Nominal rim diameter code
Rim contour

min.

6. 0

1 52 . 4

25

11

60

24

8. 5

6. 75

1 71 . 5

25

11

62

24

9. 0

a

D imensions in millimetres

Larger dimensions may b e used where these are verified b y

1 7. 5

designation

Specified rim diameter

6. 0

444. 5

6. 75

444. 5

D

type mounting trials.

© BSI 09- 1 999

7


BS AU 50-4.5.1 :1 995

Annex A (normative)
Ball tape and mandrel dimensions for verifying specified rim diameter
The nominal mandrel circumference is related to the b all tap e diameter and the s p ecified diameter of the
rim as given in Tab le A. 1 . When meas ured with a b all tap e, in accordance with Figure A. 1 the measured
circumference s hall b e equal to the nominal mandrel circumference sp ecified in Tab le A. 1 , to a tolerance
of

±

1 . 2 mm

Figure A.1 — Use of ball tape to measure rim circumference

8

© BS I 0 9 - 1 99 9


© BSI 09- 1 999
c

b

a

444. 5
571 . 5

1 7. 5
22. 5

61 6. 0

24

51 2 . 8

387. 4

51 4. 4

c

385. 8

330. 2

20

20

15

15

13
c

304. 0

12
308. 8

2 53. 2

10

b

2 2 7. 8

9

12

2 02 . 4

8

2 05. 1
1 00. 8

a

diameter

O nly for industrial rim 5. 00 S
O nly for “B” C V rims

D

Specified

4

8

diameter code

Nominal

O nly for industrial rim 4. 33 R

1 5°

5°

1 ° 30 ½

Taper
1

32 9. 53

303. 34

2 52 . 54

2 2 7. 1 4

2 01 . 74

1 00. 1 4

diameter
1

D

Nominal mandrel

1 035. 2

953. 0

793. 4

71 3. 6

633. 8

31 4. 6

circumference

Nominal mandrel

Ball diameter 8

32 9. 37

303. 1 7

2 52 . 37

2 2 6. 97

2 01 . 57

diameter

1

D

Nominal mandrel

1 034. 7

952 . 4

792 . 8

71 3. 0

633. 2

circumference

Nominal mandrel

Ball diameter 1 0

Table A.1 — Ball tape and mandrel dimensions

568. 32

441 . 32

61 4. 61

51 3. 01

51 1 . 42

386. 01

384. 42

32 8. 87

307. 43

302 . 67

2 51 . 87

2 2 6. 47

2 01 . 07

2 04. 69

diameter
1

D

Nominal mandrel

1 785. 4

1 386. 5

1 930. 9

1 61 1 . 7

1 606. 7

1 21 2. 7

1 2 07. 7

1 033. 2

965. 8

950. 9

791 . 3

71 1 . 5

631 . 7

643. 1

circumference

Nominal mandrel

Ball diameter 1 6

D imensions in millimetres

BS AU 50-4.5.1 :1 995

9


10

blank


BS AU 50-4.5 .1 :1 995

List of references

(see 1 .2 )

Normative references

BSI publications
BRITISH STANDARDS INSTITUTION, London

BS AU 50,

Tyres and wheels.

BS AU 50- 2,

Wheels and rims.

BS AU 50- 2. 0: 1 979,

workmanship).

Wheels — General (including terms and definitions, and construction and

Informative references

BSI publications
BRITISH STANDARDS INSTITUTION, London

BS AU 50,

Tyres and wheels.

BS AU 50- 1 ,

Tyres.

BS AU 50- 1 . 5,

Industrial vehicle tyres.

BS AU 50- 1 . 5. 1 : 1 994,

© BSI 09- 1 999

Specification for code-designated series tyres.


BS AU
5 0-4.5 .1 :1 995

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