Bsi bs au 050 2 5c 1996 (1999)

BRITISH STANDARD AUTOMOBILE SERIES BS AU 50 2 5c 1996 Tyres and wheels — Part 2 Wheels and rims — Section 5c Specification for road wheels manufactured wholly or partly of cast light alloy for passeng[.]

Tyres and wheels —

This Bri sh Stan ard, ha ing

b en pre ared u der the

directonof the Eng ine ring

SectorBo rd, was published

u derthe authoriy of the

Stan ards Bo rd an comes

into fect on

1 April 1 9

© BSI 0 -1 9

Fir t published July 1 7

Secon edi on April 1 9

The folowing BSI references

relate to the work on this

stan ard:

Commi e reference AUE/4

Draft for comment 9 / 71 7 5 DC

ISBN 0 5 0 2 3 6 X

The prep ration of this British Stand rd was entrusted to Tech ical

Commit e AUE/4, Ty res an whe ls for road v ehicles, upon which the

fol owing bodies were represented:

Ag ricultural Eng ine r ’ Association

Automobi e Association

British Industrial Truck Association

British Pres ure Gaug e Man facturer ’ Association

British Rub er Man facturer ’ Association

Confederation of Pas eng er Transport UK

Dep rtment of Transport

Freig ht Transport Association

Institute of Road Transport Eng ine r ( Inc)

Motor Cy cle Ind ustry ’s Association of Great Britain Ltd

Motor Ind ustry Resear h Association

National Ty re Distributor ’ Association

Retrea Man facturer ’ Association

Roa Haulag e Association Ltd

Society of Motor Man facturer and Tra er Ltd

Am endm ents is ued sinc publ cation

Commit e s responsible Inside font cov er

5.5 Protection of mag nesium al oy casting s and finished whe ls 2

Annex D ( normativ e) Ty re fit ing test Procedure for the

Annex E ( normativ e) Dy namic cornering fatig ue test 7

Annex J ( informativ e) Guid nce on certain aspects of

© BSI 0 -1 9

This Section of BSAU 5 has be n prep red b Tech ical Commit e AUE/ 4 It

super ed es BSAU 5 -2.5:19 6, which is withdrawn

The inc eased per ormance of p s eng er car led in the 19 0s to the use for the

roa whe ls of l g ht al oy s, g eneraly of aluminium or mag nesium, which ofer a

fav oura le streng th to weig ht ratio The fir t ed ition of BSAU 5 -2.5 was

publshed in 19 6 to ensure that the q ual ty of desig n an prod uction was

a eq uately control ed

This new ed ition incorporates Amendment 1 an Amendment 2 to

BSAU 5 -2.5:19 6, an introduces tech ical chang es as folows:

— in E.1 a ma imum leng th of moment arm is specified;

— in E.3 the v alue for È an the ex res ion for R hav e be n chang ed ;

— in G.3 an ad ditional option for the ty re has be n alowed for orig inal

eq uipment whe ls

References to other stand rd s hav e also be n rev iewed and, where pos ible, are

now u d ated This new edition d oes not, howev er,constitute a ful rev ision of the

stand rd

Ty re, whe l, rim and v alv e req uirements are g iv en in the fol owing Parts and

Sections of BSAU 5 :

— Pa r t 1: Tyr es;

— Se ton 0: Gener a l;

— Se ton 1: Ca r tyr es;

— Se ton 2: Commer cia l vehicle tyr es;

— Se ton 3: O ff-the-r oa d tyr es;

— Se ton 4: A gr iculur a l tr a cto a nd ma chine tyr es;

— Se ton 5: Ind ustr ia l vehicle tyr es;

— Se ton 6: Motor cycle tyr es;

— Se ton 7: Moped tyr es;

— Se ton 8: Cod e o pr a ct c f r the stor a ge o tyr es, in er tube a nd fla ps;

— Pa r t 2: Whe ls a nd r ims;

— Se ton 0: Gener a l (includ ing ter ms a nd d efiniions, a nd constr uct on a nd

wor kma nship) ;

— Se ton 1: (Wihd r a wn);

— Se ton 2: Spe ifica tion f r d imensions o whe l na ve a nd h b c ntr es fr

commer cia l vehicle ;

— Se ton 3: Spe ifica tion f r r oa d -whe l nuts, stud s a nd bol s f r commer cia l

vehicle ;

— Se ton 5: Spe ifica tion f r r oa d whe ls ma nufa ctur ed wholy o pa r tly o

ca st lght a llo f r pa ss nger ca r s;

— Se ton 6: Spe ifica tion f r r oa d whe ls ma nufa ctur ed wholy o pa r tly o

l ght a llo fr moped s a nd moto cycle ;

— Se ton 7: Cod e o pr a ct c f r the s le t on a nd ca r e o tyr es a nd whe ls fr

commer cia l vehicle ;

— Se ton 8: Cod e o pr a ctc f r the s le t on a nd ca r e o whe ls f r pa ss nger

ca r s (includ ing ca r a va ns a nd lght tr a iler s);

— Pa r t 3: Va lve ;

— Se ton 1: Spe ifica tion f r va lve d imensions;

— Se ton 2: Tyr e va lve thr ea d s 5V1, 5V2, 6V1 a nd 8V1;

— Se ton 3: Tyr e va lve thr ea d s 9V1, 10V2, 12V1 a nd 13V1;

— Se ton 4: Tyr e va lve thr ea d s 8V2, 10V1, 1 V1, 13V2, 15V1, 16V1, 17V1,

17V2, 17V3, 19V1 a nd 20V1;

— Se ton 5: Dimensions fr ISO cor e cha mber No 1 fr tyr e infla tion va lve ;

— Se ton 6: Dimensions fr ISO cor e cha mber No 2 fr tyr e infla tion va lve ;

— Se ton 7: Cod e o pr a ct c f r the s le t on a nd ca r e o tyr e infla tion va lve

fr pa ss nger ca r s (includ ing ca r a va ns a nd lght tr a iler s) ;

— Se ton 8: Cod e o pr a ct c f r the s le t on a nd ca r e o tyr e infla tion va lve

fr commer cia l vehicle ;

— Pa r t 4: R im pr ofie a nd d imensions;

— Se ton 1: Ca r r ims;

— Se ton 2: Commer cia l vehicle r ims;

— Se ton 3: O ff-the-r oa d r ims;

— Se ton 4: A gr iculur a l tr a cto a nd ma chine r ims;

— Se ton 5: Ind ustr ia l vehicle r ims;

— Se ton 6: Motor cycle r ims;

— Se ton 7: Moped r ims

A British Stand rd do s not purport to include al the neces ary prov isions of a

contract User of British Stand rds are responsible for their cor ect a plcation

Com pl anc with a British Standard does not of itself confer im m unity

f om leg al o l g ations

Sum mary of p g es

This document comprises a f ont cov er, an insid e font cov er, p g es i to iv ,

p ges1 to 1 , an inside b ck cov er an a b ck cov er

This stand rd has be n up ated ( se copy rig ht d te) and ma hav e ha

amendments incorporated This wi l be ind icated in the amend ment ta le on

theinside f ont cov er

5.1 Scope

This Section of BSAU 5 -2 specifies per ormance

requirements and method s of test for whe ls with

any structural element of l g ht al oy for use on al

p s eng er car and thre -whe led motor y cles

hav ing an u la en weig ht g reater than 25 kg

NOT Re uirements for lig ht alo whels for use on

thre -whe led motor cycles ha ing an u laden weig ht les

than2 5kg are g iv n in BSAU 5 -2.6

5.2 Ref r nces

5.2.1 Normative referenc s

This Section of BSAU 5 incorporates, b d ted or

u d ted reference, prov isions fom other

publcations These normativ e references are ma e

at the a propriate places in the text and the cited

publcations are lsted on the inside b ck cov er.For

d ated references, only the ed ition cited a ples; any

subsequent amend ments to or rev isions of the cited

publcation a ply to this Section of BSAU 5 only

when incorporated in the reference b amendment

or rev ision For u d ated references, the latest

edition of the cited publ cation a pl es, tog ether

with any amend ments

5.2.2 Informative referenc s

This Section of BSAU 5 refer to other

publ cations that prov ide information or g uid nce

Editions of these publcations cur ent at the time of

is ue of this stand rd are l sted on the inside b ck

cov er, but reference should be ma e to the latest

editions

5.3 Definitions

For the purposes ofthis Section of BSAU 5 the

definitions g iv en in BSAU 5 -1.0 an BSAU 5 -2.0

a ply , tog ether with the fol owing

Se also Fig ure 2

5.3.1

c ntre m ember (disc, spider or spoked)

the con ection betwe n the v ehicle hub and the

whe l rim

5.3.2

na e

central portion of centre member, where the whe l

mou ting face and fixing features are usual y

located

5.3.3

ofset

the distance betwe n the mou ting face of the nav e

an the centre- ine of the rim ( se Fig ure 1) The

distance is termed positiv e ( inset) when the

mou ting face is outboard of the rim centre- ne and

neg ativ e ( outset) when inboard of the rim

centre- ine

5.3.4

whe l lo ding

the mas sup orted b a whe l

5.3.5

spe ific a pl cation whe l

a whe l d esig ned to me t the specification

d etermined b the v ehicle man facturer

5.3.6

g eneral a pl cation whe l

a whe l desig ned so that one b sic casting ma be

used for whe ls to be uti iz d for a v ariety of v ehicles

5.3.7

ra iolog ical standard

permanent ra iog ra hic record of the b sic desig n of

whe l showing the minimum ac eptance stand rd

as ag re d betwe n the fou der and the whe l

man facturer

5.4 Materials

The materials used to man facture cast lg ht aloy

road whe ls shal be such that the per ormance

requirements of this stand rd are met, se Annex A

NOT The materials used should prefera ly conform to eiher

BS1 9 or BS2 7 ,howe er in order to p rmi the de elo ment

an a plicaton of alo s not inclu ed in the a o e stan ards,

other lig ht alo s ma b used

Cast l g ht al oy s, whether or not included in

BS14 0 or BS29 0, shal hav e suita ly specified

chemical compositions, mechanical properties and

other phy sical req uirements which shal be d efined

and ag re d betwe n the fou der and the whe l

man facturer with p rticular at ention being g iv en

to the influence of ag e hardening and stres

cor osion

W hatev er the lg ht aloy s used in the man facture

of roa whe ls conforming to this Section of

BSAU 5 , the inspection and qualty control for cast

aluminium and cast mag nesium al oy s shal

conform to BS14 0 or BS29 0 respectiv ely ,

includ ing the a d itional inspection and test

procedures for analy sis, tog ether with optional

proced ures as ag re d betwe n the fou d er and the

whe l man facturer

NOT In the case of BS2 7 :1 8 this coresp n s to the

clas ificaton QC/TS (qualiy controled to a test s hed le) In the

case of BS1 9 :1 8 this cor esp n s to sup lementary test

codeA, wih other test codes as ag re d in the test shed le

Materials other than cast lg ht al oy s used to make

p rts of a composite whe l shal conform to the

a propriate British Stand rds ( se A.3) In making

use of such materials, cog nizance shal be taken of

the comp tibi ity of dis imi ar materials

© BSI 0 -1 9

I suita le British Stand rd specifications are not

av ai a le, the req uirements for the materials shal

be specified an ag re d betwe n the fou der and the

whe l man facturer

5.5 Protection ofma g nesium al oy

casting s and finished wheels

The protectiv e treatment ag ainst cor osion shal be

a pled b the founder and/or the whe l

man facturer All sur aces on mag nesium whe ls

shal be fuly protected

5.6 Tests on completed wheels

5.6.1 Desig n a pro al

To conform to the req uirements of this Section of

this stand rd, whe ls shal fir t hav e the desig n

v ald ated b test samples, which shal demonstrate

conformity to 5.6.4 Any chang e in d etai d esign or

aloy specification shal be folowed b rev ald tion

Rev al d ation shal also fol ow any chang e in the

finishing sy stem which results in chang es in the

residual sur ace stres cond ition

NOT In the case of whe ls for g eneral a plicaton, test

sp cimens ma b selected, using the proced re des rib d in

Anne B

5.6.2 Conform ity of pro uction

For samplng rates, se Annex C The minimum

rate of testing should be in ac ord ance with the

recommend tions g iv en in C.1

The results of the tests shal be interpreted , and

re-ex mined or retesting car ied out, in ac ord nce

with the c iteria specified in C.2

5.6.3 Preparation oftest whe ls

Tests shal be car ied out on fuly -finished whe ls

representativ e of normal prod uction except in those

cases where permanent coating s hav e be n a pled

which can ot be remov ed b simple chemical

proces es without d mag e to the whe ls, this

coating remov al being neces ary to permit

penetrant-dy e c ack detection to be car ied out In

these exceptional cases it shal be permis ible to test

uncoated whe ls, prov id ed that the whe ls hav e

und erg one the complete heat-stov ing cy cle

a plca le to the coating proces

5.6.4 Per orm anc requirem ents

5.6.4.1 G eneral

All whe ls man factured to this stand rd shal

conform to the fol owing perormance req uirements

5.6.4.2 Ty e fit ting te t

W he l rim profies not conforming to the

requirements of BSAU 5 -4.1 shal conform to the

c iteria for ac eptance specified in Annex D

5.6.4.3 Dynamic co nering fatigue t est

( ep rat e whe l

W he ls shal be subjected to the d y namic cornering

fatig ue test d es ribed in Annex E, and shal conform

to the c iteria for ac eptance specified in E.4

andE.5

5.6.4.4 Dynamic radial fatigue t est ( eparat e

whe l

W he ls shal be subjected to the dy namic rad ial

fatig ue test des ribed in Annex F, and shal conform

to the c iteria for ac eptance specified in F.4

and F.5

5.6.4.5 Imp ct te t ( eparate whe l

W he ls shal be subjected to the imp ct test

d es ribed in Annex G, and shal conform to the

c iteria for ac eptance specified in G.7 and G.8

5.6.4.6 Finishing sy stems

Inboard p rts of al whe ls,the rim area cov ered b

the ty re, whether pol shed or not, and any other

u polshed areas, shal be protected to conform to

the req uirements of Annex H A finished whe l ( not

test p nels) shal be used for the salt spra test

specified in H.2.1

It shal be the responsibi ty of the whe l

man facturer and the retaier to include with the

sale of pol shed whe ls a warning of the efects of

cor osion on the polshed areas, an to make

recommend tions reg arding protection

N T Guidance on some asp cts of the desig n of whe l

at achment systems is g iv en in Anne J

Chemical analy sis certificates and/or hot metal

sup ler ’ analy sis certificates, chemical analy sis

record s, mechanical test record s, heat treatment

furnace charts, d imensional records and records of

conformity to the per ormance tests specified

in5.6.4 a pertaining to al whe ls shal be retained

for a minimum period of 6 y ear

5.8 Ma rking

W he ls shal be marked with the fol owing

information:

a) the n mber of this British Stand ard,

i.e.BSAU 5 -2.5c:19 6

1)

1)

Marking BSAU 5 -2.5c:1 9 on or in relaton to a prod ct re resents a man facturer’s declaraton of conformiy, i.e a claim

b or on b half of the man facturer that the prod ct me ts the re uirements of the stan ard The ac uracy of the claim is solely

the claimant’s resp nsibiliy S ch a declaraton is not to b confused wih third p rty certficaton of conformiy , which ma also

b desira le

b) the cou try of orig in;

c) the trad emark or other means of identification

of the man facturer;

d) the siz of the whe l ( including ofset) In the

case of specific a plcation whe ls, including

those sup led as orig inal equipment,these shal

be marked with the v ehicle man facturer’s p rt

n mber for the model for which the whe l has

be n a prov ed;

e)the ma imum whe l load ing as determined b

the v ehicle or whe l man facturer;

f) an ind ication of the d ate of production of the

whe l

The a ov e marking s shal be permanent an v isible

when the whe l is fit ed with a ty re

5.9 Valve holes

The hole prov id ed in the whe l rim to ac ommod te

the ty re v alv e shal conform to the dimensions g iv en

in Fig ure 3 for clamp- n, sna - n or tube v alv es

Particular at ention shal be p id to the control of

d epth on cou terbores and d ue note taken that, in

many stand rd rim profies, the cou terbore on the

outer face ma come v ery close to “ breaking

throug h” In this ev ent, consideration should be

g iv en to inc easing the wel depth of the rim profi e

Fig ure 1 — Ty ical whe ls

© BSI 0 -1 9 Fig ure 2 — Whe l nom enclature